Why was "tantrum" trending last week?
late 14c., "love of learning," from Latin philologia "love of learning, love of letters, love of study, literary culture," from Greek philologia "love of discussion, learning, and literature; studiousness," from philo- "loving" (see philo-) + logos "word, speech" (see logos).
Meaning "science of language" is first attested 1716 (philologue "linguist" is from 1590s; philologer "linguistic scholar" is from 1650s); this confusing secondary sense has not been popular in the U.S., where linguistics is preferred. Related: Philological.
a term now rarely used but once applied to the study of language and literature. Nowadays a distinction is usually made between literary and linguistic scholarship, and the term philology, where used, means the study of language-i.e., linguistics (q.v.). It survives in the titles of a few learned journals that date to the 19th century. Comparative philology was a former name for what is now called comparative linguistics (q.v.).