קָפָא‎ (qâphâʼ|kaw-faw'|noun|masculine|congelation|thicken)
[Heb] קָפָא‎, קִפָּאֹון‎ ETCBC: קפא‎ (verb|condense), קִפָּאֹון‎ (subs|frost) OSHL: s.cj.aa, s.cj.ab TWOT: 2048 2048a GK: H7884, H7885 Greek: πήγνυμι
Derivation: a primitive root;
Strong's: to shrink, i.e. thicken (as unracked wine, curdled milk, clouded sky, frozen water)
KJV: congeal, curdle, dark, settle.