Types and functions of morphemes
All morphemes are identified within a word in a strict linear sequence. During structural analysis, we can discover several types of meaningful elements.
- Root. This is the central part containing the semantic core. For example, in the series pot-ovoy, pot-nyy, pot-nitsa, vy-pot, the highlighted fragment is the root.
- Derivational affixes. The term originates from the Latin word affixus (attached). Traditionally, these include the prefix and the suffix. They differ solely in their position relative to the root. Their main function is to attach to the root and form completely new lexical units called derivative words.
- Ending (inflection). This is also an affix, but unlike suffixes and prefixes, it carries an exclusively grammatical meaning. Inflection is needed solely to perform word inflection (changing the lexeme by gender, number, and case). It is crucial to remember: an ending never serves word-building purposes.
Classification of words by stem type
Depending on the base underlying the word, all lexical units can be divided into three large groups:
- Non-derived word. This is a term possessing a non-derived stem. Such a stem is maximally simple and consists solely of a single root, without the addition of any derivational affixes.
- Source word. This is the initial unit containing the source stem. It is relative to this unit that new, more complex terms are constructed.
- Derivative word. This is a word that contains a derived stem. Structurally, it always includes the initial (source) base and one or more added affixes that formed the new meaning.
Criteria for term segmentability
Segmentable words are those in which at least one constituent part regularly repeats in other words related to the original in meaning. Segmentability itself is classified into incomplete and complete.
Complete segmentability is observed when absolutely all constituent parts of a term (whether individual morphemes or entire blocks of them) repeat in other derivative words. This is especially evident in clinical terms of Greco-Latin origin:
- pod-algia — the term is fully segmentable into roots derived from the Greek words pus, podos (foot) and algos (pain);
- pod-o-metria — an element from the Greek metreo (to measure) is added to the root denoting the foot;
- neur-algia — based on the Greek word neuron (nerve) and an element denoting pain;
- my-algia — formed from the Greek mys, myos (muscle);
- kephal-o-metria — includes a root from the Greek word kephale (head);
- thorac-o-metria — built on the basis of the Greek thorax, thorakos (chest).
Briefly: answers to topical questions
What is incomplete word segmentability?
Incomplete word segmentability is observed when not every meaningful part is found in other modern medical terms. Usually, the first part of the term is identified as frequent, while the second is unique.
- Example (podagra) — gout in the feet, where pus, podos (foot) acts as a frequent element, while agra (seizure, attack) is a practically unique element in modern terminology.
Which Latin and Greek prefixes are used in term formation?
Latin and Greek prefixes distributed across subsystems are used in term formation: Latin prefixes predominate in anatomical nomenclature, while Greek prefixes predominate in clinical disciplines.
| Significance | Latin prefixes | Greek prefixes |
|---|---|---|
| Displacement, transition | trans- | — |
| Counter-, anti- | contra- | anti- |
| Elimination, removal | de-, des- | — |
| Division, separation | dis- | dia- |
| In, into, within | in-, im- (il-, ir-) | en-, em- |
| Ex, out of, outside | ex-, e- (ef-) | ec-, ex- |
To avoid confusing element functions: affixes (suffixes and prefixes) create NEW words, while inflection (ending) merely CHANGES THE FORM of an existing word.
Class and exam questions
What is a morpheme?
This is the minimal, completely indivisible significant part of any word, both in terms of meaning and form.
Does morphemic analysis answer the question of how a word was formed?
No. The main limitation of morphemic analysis is that it only shows the composition of a word, but does not explain the mechanism of its formation.
What is the main difference between an ending and a suffix?
The ending (inflection) carries a grammatical meaning and serves exclusively to change the word form (word inflection). A suffix, on the other hand, is a derivational affix that forms new (derivative) words.
What else to study on this topic
- Features of incomplete word segmentability in medical terminology
- Mechanisms of derivative term formation
- Linear sequence of morphemes and rules for its determination
- Differences between morphemic and derivational analysis
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Other Topics in the Section "Morpheme, TE, Suffixation in Word-Formation"
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