[en.ta.sis] n, pl -ta.ses [Gk, lit., distension, stretching, fr. enteinen to stretch tight (fr. en-
[2]en- + teinein to stretch)--more at thin] (1664): a slight convexity esp. in the shaft of a column
[en.ta.sis] n, pl -ta.ses [Gk, lit., distension, stretching, fr. enteinen to stretch tight (fr. en-
[2]en- + teinein to stretch)--more at thin] (1664): a slight convexity esp. in the shaft of a column
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012