(linguistics) The canonical form of an inflected word; i.e., the form usually found in dictionaries.
(psycholinguistics) The theoretical abstract conceptual form of a word, representing a specific meaning, before the creation of a specific phonological form as the sounds of a lexeme, which may find representation in a specific written form as a dictionary or lexicographic word.
(botany) The outer shell of a fruit or similar body
“On the day before florets opened, the third florets from the top of the first branches were fixed in FAA after removing the lemmas.”
“It takes a long series of lemmas to show how powerful the primitive recursive functions are.”
“In this section, we explain the Hadamard transform and prove a number of technical lemmas expressing the partial derivatives of the likelihood function.”