In linguistics, and particularly in morphology, lemma refers to the canonical form of the word. This is important mainly in the highly flexible languages[?], such as Czech.
... under the age of 18, 7.5% from 18 to 24, 33.5% from 25 to 44, 23.9% from 45 to 64, and 6.9% who are 65 years of age or older. The median age is 34 years. For every 100 ...