הַצְלָלָה ᴵ f.n. NH 1 submerging (e.g. a submarine). 2 making clear (said of water). [Verbal n. of הִצְלִיל (= he sank; he made clear, clarified), Hiph. of צלל ᴵ. For the ending see first suff. ◌ָה.]