Lemon oil comes from the Citrus limon tree, from the rind of the same lemon fruit that we eat. Citrus limon trees grow to 15 feet high and are thought to have originated in China and spread to Mediterranean regions.
Full Definition of ACRONYM. : a word (as NATO, radar, or laser) formed from the initial letter or letters of each of the successive parts or major parts of a compound term; also: an abbreviation (as FBI) formed from initial letters: initialism.
Acronym is a fairly recent word, dating from the 1940s, although acronyms existed long before we gave them that name. The term was preceded in English by the word initialism, meaning an abbreviation formed from the initial letters of a phrase, and which has been in use since the late 19th century.