Lemma

Explanation

A lemma is the form under which lexical information is gathered and made retrievable in a dictionary, corpus index, or other linguistic inventory. For inflecting words, a citation form is conventionally selected, such as the infinitive for verbs or singular form for many nouns. The lemma is neither every word form occurring in a text nor automatically identical with the abstract lexeme: it is first an editorial and data-structural access unit. Homonyms may receive separate lemmas, variants may be grouped or separated, and multiword expressions require their own decisions. Lemmatisation assigns concrete tokens to such forms. The movement proceeds from dispersed occurrences to a stable point of access and then back to the question of which distinctions this grouping must preserve, explain, or reveal.

Movement of thought

1. Many inflected, written, or spoken forms first occur in texts and may point to recurrent lexical patterns. 2. A dictionary or analytic system selects a representative form as their point of access according to explicit conventions. 3. Attestations, meanings, grammatical information, and variants are organised under the lemma for retrieval and comparison. 4. A counter-test examines homonymy, multiword status, and inflectional assignment and separates lemma from lexeme, token, word form, stem, and heading. 5. The stable point of access leads back into diverse attestations; good lemma selection groups forms without swallowing relevant differences.

Scientific use case

Lexicography, corpus linguistics, and computational linguistics design lemma policies, handle homonyms and multiword expressions, and measure lemmatisation errors. Historical and non-standard data require documented variant rules.

Example

Under the lemma “run,” a dictionary records forms such as “runs” and “ran,” several meanings, and usage examples; the citation form serves as their common access point.

Counterexample

The form “went” occurs as a concrete word in a sentence. In a standard English dictionary it is normally not an independent lemma but is accessed under the lemma “go.”

Distinction

Distinguish it from lexeme, word form, token, type, stem, root, entry word, headword, lemma sign, and lemmatisation as a procedure; state citation convention, homonym separation, and treatment of variants.

Effect on thought and perception

Lemmas make large sets of forms searchable, comparable, and editorially manageable; poor grouping can conflate meanings, marginalise variants, or conceal analytic decisions.

Resonance

Many word forms gather at one name and flow from it back into their contexts; the lemma is a node of access, not the whole linguistic form.

Cite this entry

Reich, Michael (Hrsg./ed.): „Lemma“. Atlas der Sprache, AT-W3-0401. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-W3-0401

https://atlasoflanguage.com/concept/AT-W3-0401