a plural ending of nouns borrowed from Greek and Latin: phenomena; criteria; data; errata; genera.
Can a Hashtag Be a Word?#jesuischarlie, #RupertsFault, and #SOTUBURN: 2015 has already produced hashtags that have sparked national and international conversations. But are hashtags really words? At the annual meeting of the American Dialect Society in early January, linguists and word enthusiasts vote on the Word of the Year. This year, the overall winner of this vote was the hashtag #blacklivesmatter. Though it first emerged in 2013, #blacklivesmatter surged in popularity in …
a feminine singular ending of nouns borrowed from Latin and Greek, also used in Neo-Latin coinages to Latinize bases of any origin, and as a Latin substitute for the feminine ending -ē of Greek words: anabaena; cinchona; pachysandra.
an ending of personal names forming feminines from masculines: Georgia; Roberta.
Origin of -a3
< L feminine -a (see -a2), as Claudia, feminine of Claudius
a suffix designating the oxide of the chemical element denoted by the stem: alumina; ceria; thoria.
Origin of -a4
probably generalized from the -a of magnesia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019