etymology of heaven

from the word ACID?! From Latin acidus (sour), from acere (to be sour). Ultimately from the Indo-European root ak- (sharp), which is also the source of acrid, vinegar, acute, edge, hammer, heaven, eager, oxygen, and mediocre. heaven, from dictionary.com: Origin: before 900; Middle English heven, Old English heofon; cognate with Middle Low German heven; akin to Old Norse himinn, Gothic himins, German Himmel