From chanak; initiation, i.e. Consecration -- dedicating(-tion).
see HEBREW chanak
H2598. chanukkah
חֲנֻכָּה noun feminine dedication, consecration, as a matter of usage only P and late (Late Hebrew חֲנוּכָּה Feast of Dedication; so Aramaic חֲנוּכְּתָא) — abs ׳ח Nehemiah 12:27; construct חֲנֻכַּת Numbers 7:10 6t.; dedication of wall of Jerusalem Nehemiah 12:27 (twice in verse), by sacrifices and processions, with music; of altar in temple 2 Chronicles 7:9; of 'the house' Psalm 30:1 (title), i.e. the temple (re-dedication by Judas Maccabaeus, 1Macc 4:52ff.), see Ol Bae and others (opposed to De), and especially CheOP 234. 247; = dedication-offering for altar in tabernacle Numbers 7:10 (accusative with וַיַּקְרִיבוּ), compare הַמִּזְבֵּחַ לַחֲנֻכַּת אֶתקָֿרְבָּנָם יַקְרִיבוּ 7:11, also 7:84; 7:88 (all P; see Di 7:20).