lemma 1
/lem"euh/ , n. , pl. lemmas, lemmata /lem"euh teuh/ .
1. a subsidiary proposition introduced in proving some other proposition; a helping theorem.
2. an argument, theme, or subject, esp. when indicated in a heading.
3. a word or phrase that is glossed; headword.
[ 1560-70; lêmma something received, premise, akin to lambánein to take, receive, take for granted ]
lemma 2
/lem"euh/ , n. , pl. lemmas . Bot.
a bract in a grass spikelet just below the pistil and stamens.
[ 1745-55; lémma shell, husk, akin to lépein to peel ]