LOWERCASE
lowercase
(adjective) relating to small (not capitalized) letters that were kept in the lower half of a compositor’s type case; “lowercase letters; a and b and c etc”
Source: WordNet® 3.1
Etymology
Noun
lowercase (uncountable)
Alternative spelling of lower case
Adjective
lowercase (not comparable)
in lower case
Verb
lowercase (third-person singular simple present lowercases, present participle lowercasing, simple past and past participle lowercased)
(transitive) To convert (text) to lower case.
Source: Wiktionary
Low"er-case`, a. (Print.)
Definition: Pertaining to, or kept in, the lower case; -- used to denote
the small letters, in distinction from capitals and small capitals.
See the Note under 1st Case, n., 3.
Source: Webster’s Unabridged Dictionary 1913 Edition