entasis

n. 圆柱收分曲线, 柱上的微凸线
【医】 紧张性痉挛

en.ta.sis

n.（名词）
pl. en.ta.ses[-sôz.]
A slight convexity or swelling, as in the shaft of a column, intended to compensate for the illusion of concavity resulting from straight sides.
柱中微凸线：为了抵消因为直边所造的中间凹陷幻觉，而在梁柱上放置的小隆凸

来源：
Latin
Latin
from Greek [tension]
from Greek [tension]
from enteinein [to stretch tight]
from enteinein [to stretch tight]
en- [intensive pref.] * see en- 2
en- [intensive pref.] *参见 en-2
teinein [to stretch] * see ten-
teinein [to stretch] *参见 ten-