動詞 distend:

1. become wider
   同義詞：dilate
2. cause to expand as it by internal pressure
3. swell from or as if from internal pressure

1. Swollen or distended beyond normal size by fluid or gaseous material.
   腫脹的液體或氣體材料超過正常尺寸的腫脹或膨脹
2. Having eyes with greatly distended pupils.
   眼珠暴突的具有帶有膨大的瞳孔的眼睛的

dis.tend

v.（動詞）
dis.tend.ed,dis.tend.ing,dis.tends
v.intr.（不及物動詞）
To swell out or expand from or as if from internal pressure.
膨脹，腫脹：由或好象由內(nèi)部壓力而膨脹或擴張的
v.tr.（及物動詞）
To cause to expand by or as if by internal pressure; dilate.
使膨脹，使腫脹：由內(nèi)部壓力或好象由內(nèi)部壓力而引起膨脹；使腫脹
To extend.
使擴展，擴大，展開

來源：
Middle English distenden
中古英語 distenden
from Latin distendere
源自 拉丁語 distendere
dis- [dis-]
dis- [表示.不，分離.之意]
tendere [to stretch] * see ten-
tendere [舒展，展開，拉緊，撐大] *參見 ten-