FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

ya`an yah'-an — from an unused root meaning to pay attention; properly, heed; by implication, purpose (sake or account); used adverbially to indicate the reason or cause:--because (that), forasmuch (+ as), seeing then, + that, + wheras, + why.