Where is the word first used? Who coined it?
The eight or nine-branched candelabrum used for candle lighting on Chanukah is called a “Menorah” in Leshon HaKodesh. The word Menorah is mentioned many times in the written and oral Torah. The Hebrew word Chanukiya was invented by Chemda Ben-Yehuda, wife of Eliezer Ben-Yehuda, and was first publicized in Ben-Yehuda’s newspaper “Hatzvi” in 1897. This invention was very controversial even among the circles of the Maskilim. The famous Maskil Moshe Leib Lilienblum was very opposed to this word and ridiculed it in his article “Leharchavat Hasafah”. However it is the common term used in modern Hebrew.