From BiblePortal Wikipedia

American Tract Society Bible Dictionary [1]

Constantly flowing, a month so named before the captivity, because the autumnal rains them begin to fill the dry river channels. It was afterwards called Tishri, and answers nearly to our October. On this month Solomon's temple was dedicated,  1 Kings 8:2 .

Watson's Biblical & Theological Dictionary [2]

one of the Hebrew months,  1 Kings 8:2 . In this month the temple of Solomon was dedicated. After the Jews returned from the captivity, the month Ethanim was called Tisri, which answers to our September.

Smith's Bible Dictionary [3]

Eth'anim. See Month .

Hastings' Dictionary of the Bible [4]

ETHANIM (  1 Kings 8:2 ). See Time.

Holman Bible Dictionary [5]

 1 Kings 8:2

Easton's Bible Dictionary [6]

 1 Kings 8:2

Morrish Bible Dictionary [7]

See Months

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [8]

(Hebrews Eythanim', אֵיתָנַים , Perennial streams; Sept. Ἀθανίν ) , another name for the month TISRI (See Tisri) (q.v.); so called from the fullness of the Brooks at that time of the year, being swelled with the autumnal rains ( 1 Kings 8:2). (See Calendar).

International Standard Bible Encyclopedia [9]

eth´a - nim ( אתנים , 'ēthānı̄m ): The seventh month of the Jewish year ( 1 Kings 8:2 ). The word is of Phoenician origin and signifies "perennial," referring to living streams. It corresponds to September-October. See Calendar; Time .

Kitto's Popular Cyclopedia of Biblial Literature [10]

Eth´anim [TISRI]