πύκνωσις

A. condensation, opp. μάνωσις, Arist. Ph. 260b8; opp. ἀραίωσις, Epicur. Nat. 14 Fr. 11, Plu. 2.695b; π. ὑδατώδης, of the air, Arist. Mete. 372b31; τὸ νέφος π. ἀέρος Id. Top. 146b29; ἡ διὰ ψῦχος π. S.E. P. 1.238.

II. (from πυκνόομαι) condensed matter, Arist. Mete. 344a16, Plu. 2.721a(pl.).

2. frequency of the pulse, Marcellin. Puls. 228.

III. in Tactics, close order, κατὰ τὰς ἐναγωνίους π. Plb. 18.29.2; τῶν σαρισῶν Id. 18.30.3, cf. Onos. 10.2 (pl.); esp. of the phalanx, Ascl. Tact. 4.1,3, Ael. Tact. 11.3, Arr. Tact. 11.3.

IV. Rhet., aggregation, τῶν ἐκλελεγμένων Longin. 10.1.