Log in
Latin Language · Self-Preparation for Clinical Terminology Quiz

Clinical terms and diagnoses

Termini clinici et diagnoses

Clinical terminology is a system of names for pathological conditions, diseases, and surgical procedures. Most of these terms are constructed from Greco-Latin word-building elements: roots denoting an organ, and suffixes indicating the nature of the process. Understanding these "blocks" makes it easy to decode even the most complex diagnoses without mechanical memorization.

SurgeryThe suffixes -tomia, -ectomia, and -plastica denote various types of surgical interventions.
InflammationThe suffix -itis always indicates an inflammatory process (e.g., bronchitis, splenitis).
TumorsThe ending -oma is characteristic of neoplasms (myoma, sarcoma, odontoma).
Compound wordsTerms can include multiple roots, for example: gastroenterologia or thoracolaparotomia.
5 min readFor medical studentsUpdated 09/24/2026
Material prepared by WhiteCoat Pro editorial team based on platform study guidesReviewed by medical editor: Aulov A. A., general practitioner · 09/24/2026

Principles of term construction

Medical diagnoses and procedure names are assembled like constructor sets. The base is a root (usually Greek) naming the anatomical structure, to which term elements describing the essence of the pathology or intervention are attached.

For example, the term splanchnologia consists of the root splanchn- (viscera) and -logia (science). Or, if we take the root laparo- (abdomen) and add -tomia (incision), we get laparotomia — laparotomy. More complex terms combine several organs at once: ileocoloplastica (plastic surgery of the ileum and colon) or colpoperineotomia (incision of the vagina and perineum). Sometimes terms reach an impressive length, such as pancreatocholangiorentgenographia (X-ray examination of the pancreas and bile ducts).

Pathological processes and conditions

Specific suffixes and endings are used to describe diseases, which immediately reveal the clinical picture of the condition:

  • -itis — inflammation. Examples: appendicitis acuta (acute appendicitis), typhlitis (typhlitis), mastoiditis (mastoiditis).
  • -osis — chronic diseases, dystrophic changes, or a pathological increase in cell count. Examples: arthrosis (chronic joint disease), lymphocytosis (elevated lymphocyte count), diverticulosis (presence of multiple diverticula in an organ wall).
  • -oma — tumors. They can be benign (tumor benignus, blastoma maturum) and malignant (tumor malignus). Examples: odontoma (odontoma), adenocarcinoma (adenocarcinoma), cholangioma (cholangioma).
  • -ptosis — downward displacement of an organ: nephroptosis (nephroptosis), splanchnoptosis (splanchnoptosis).
  • -malacia — softening of tissues: osteomalacia (osteomalacia), encephalomalacia (encephalomalacia).
  • -rrhexis — rupture: cardiorrhexis (cardiorrhexis).
Test your knowledge on this topicTasks from the "Latin Language" course bank — instant answers and explanations.

Surgical interventions and procedures

Operation names are also strictly structured. Knowing the final element allows you to precisely determine the essence of the surgical manipulation:

Term elementSignificanceExample
-ectomiaRemoval (excision)Salpingectomia (salpingectomy)
-stomiaCreation of a fistula/anastomosisColostomia (colostomy)
-pexiaFixation of an organSplenopexia (splenopexy)
-plasticaReconstructive surgeryUranoplastica (uranoplasty)
-rrhaphiaSuturing (closure)Colporrhaphia (colporrhaphy)
-centesisPunctureThoracocentesis (thoracentesis)
-desisSurgical immobilizationArthrodesis (arthrodesis)

Terminology of individual body systems

Each medical specialty has its characteristic terms. In cardiology, words with the roots cardio- and angio- are common: stenocardia (stenocardia), myocardiosclerosis (myocardiosclerosis), angiospasmus (angiospasm).

In obstetrics and gynecology (ars obstetricia), the roots hystero-, metro-, colpo-, and oophor- are actively used: abrasio uteri (uterine curettage), graviditas abdominalis (abdominal pregnancy), sectio caesarea (caesarean section), oophoritis (oophoritis).

To describe blood and lymph pathologies, the elements haemato-, lympho-, and -aemia are used: haematologia (hematology), haemostasis (hemostasis), lymphostasis (lymphostasis).

Agreement in multi-word diagnoses

A clinical diagnosis is often a phrase where a noun agrees with an adjective. The adjective clarifies the course of the disease, its localization, or form.

For example, pneumonia gangraenosa translates as gangrenous pneumonia, and hernia inguinalis superficialis as superficial inguinal hernia. It is important to remember that in Latin, the modifier always follows the modified word (noun). Thus, skin cancer sounds like cancer cutis, a congenital cyst as cysta congenita, and acquired heart defect as vitium cordis acquisitum. In dentistry, detailed diagnoses are common, such as caries dentis profunda (deep dental caries) or gingivitis gravidarum (gingivitis of pregnancy).

Briefly: answers to topical questions

Which Greek roots are used to denote the kidney and renal pelvis in clinical terms?

To denote the kidney and renal pelvis in clinical terminology, the following Greek roots are used, which are combined with various suffixes and term elements:

  • Kidney (ren) — nephro- (e.g., nephroptosis — nephroptosis, nephrostomia — nephrostomy).
  • Renal pelvis (pelvis renalis) — pyelo- (e.g., pyelitis — pyelitis).

Which term elements denote pathological dilation and narrowing of tubular organs or vessels?

To denote pathological changes in the lumen of tubular organs, the following term elements are used:

  • Dilation (ektasis) — -ectasia, -ectasis (non-surgical stretching or expansion of a hollow or tubular organ).
  • Narrowing (stenos) — steno-, -stenosis (narrow, tight, narrowing, stenosis).

Examples include the terms bronchoectasis (bronchiectasis) and pylorostenosis (pyloric stenosis).

How are the Latin names of inflammatory diseases of various heart membranes (endocarditis, myocarditis, pericarditis) formed?

The Latin names of inflammatory diseases of the heart membranes are formed by appending the suffix -itis (denoting inflammation) to the stem of the corresponding layer's name.

  • Endocarditis (endocarditis) — inflammation of the inner membrane of the heart (endocardium).
  • Myocarditis (myocarditis) — inflammation of the muscular layer (myocardium).
  • Pericarditis (pericarditis) — inflammation of the pericardial sac (pericardium).

To denote the membranes themselves, the prefixes endo-, peri-, epi- and the root cardio- are used.

Which suffixes are used to denote research methods: instrumental examination, graphical recording, and radiography?

To denote various methods of medical examination, the following Greek term elements (suffixes) are used:

  • Instrumental examination (skopeo) — -scopia (observation, examination).
  • Graphical recording and radiography (grapho) — -graphia (process of image recording, graphical signal registration).

The result of such recording (an image or picture) is denoted by the suffix -gramma.

Which Greek roots correspond to the Latin names of glands (thyroid, mammary, lacrimal)?

The Latin names of glands correspond to the following Greek combining forms:

GlandLatin nameGreek root
Thyroid glandglandula thyr(e)oideathyr(e)o-
Breastmammamasto-
Lacrimal glandglandula lacrimalisdacryoadeno-

These roots are actively used to form clinical terms such as thyreotoxicosis (thyrotoxicosis), mastectomia (mastectomy), and dacryoadenitis (inflammation of the lacrimal gland).

How to memorize

To avoid confusing surgical suffixes, remember these associations: -tomia (tomē, to cut — incision), -ectomia (extra — out, removal), -stomia (stoma — mouth, creation of an artificial opening).

Class and exam questions

What is the difference between the suffixes -itis and -osis?

The suffix -itis always denotes an acute or chronic inflammatory process (e.g., hepatitis). The suffix -osis indicates dystrophic, degenerative non-inflammatory changes or a pathological increase in cell count (e.g., hepatosis, thrombocytosis).

How to translate the term "carcinoma in situ"?

This term translates as "cancer in situ" or intraepithelial carcinoma. It denotes an early-stage malignant tumor that has not yet invaded the underlying tissues.

What does the element -scopia mean in terms?

The element -scopia translates as instrumental examination or visual study of an organ. For example, hysteroscopia is an instrumental examination of the uterine cavity.

What is iatrogenia?

The term iatrogenia denotes a disease or pathological condition induced by medical intervention or the actions of a physician.

Still have questions? Ask the AIThe AI tutor has reviewed the material on "Clinical terms and diagnoses" and will explain it in simple terms.

What else to study on this topic

  • Dental and maxillofacial terminology (cheilosis, meloschisis, uranoschisis)
  • Terms describing sensory and motor disorders (anaesthesia, dyskinesia, myasthenia)
  • The difference between tumor maturus and blastoma malignum
  • Complex diagnostic procedures and imaging methods (tomographia, dacryocystographia)
  • Tissue destruction and dissolution processes (osteolysis, thrombolysis, cytolysis)

Master the entire topic in the "Latin Language" course

This is a summary. The course covers everything tested in classes and exams.

  • Complete study guide on "Clinical terms and diagnoses" and 2,323 more pages of the subject
  • Assignments and quizzes after every topic — just like in a colloquium
  • AI tutor answers questions on the topic anytime
  • 107 video lessons on the subject

Other topics in the section "Self-Preparation for Clinical Terminology Quiz"

The entire section "Self-Preparation for Clinical Terminology Quiz"

Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.