κένωμα

ατος, τό
A. empty space, vacuum, Erasistr. ap. Gell. 16.3.8 (in Ion.form κείνωμα), Ph. Bel. 57.17 (pl.), Plb. 6.31.9, Phld. Sign. 36 (pl.), Plu. 2.655b (pl.).
2. vacancy, non-existence, Anon. in Prm.in Rh.Mus. 47.603.
3. empty vessel, POxy. 1292.4 (i A.D.), PAmh. 2.48.8 (ii B.C.): pl., ῥοιᾶς κ. empty shells, Asclep. ap. Gal. 13.302.
II. Medic., evacuation, Phld. Lib. p.30 O., Dsc. 5.11, Plu. 2.381d.
2. evacuant, in pl., Herod.Med.in Rh.Mus. 58.89, Ruf. Fr. 116.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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