形容詞 elliptic:

1. of a leaf shape; in the form of an ellipse
2. rounded like an egg
   同義詞：egg-shaped, elliptical, oval, oval-shaped, ovate, oviform, ovoid, prolate
3. characterized by extreme economy of expression or omission of superfluous elements- H.O.Taylor
   同義詞：elliptical

1. Pluto has an elliptic orbit.
   冥王星的軌道是橢圓形的。

el.lip.tic

adj.（形容詞）
Of, relating to, or having the shape of an ellipse.
橢圓的：橢圓形的、與橢圓形有關(guān)的或具有橢圓形的
Containing or characterized by ellipsis.
包括橢圓的，或以橢圓為特征的

Of or relating to extreme economy of oral or written expression.
精簡的：口頭或文字表達(dá)極其精練的，或與之有關(guān)的
Marked by deliberate obscurity of style or expression.
晦澀的：以有意使風(fēng)格或表達(dá)上含糊不清為特點(diǎn)的

來源：
New Latin ellopticus
現(xiàn)代拉丁語 ellopticus
from Greek elleiptikos [defective]
源自 希臘語 elleiptikos [有缺點(diǎn)的]
from elleipsis [a falling short, ellipsis]
源自 elleipsis [未達(dá)標(biāo)準(zhǔn)，省略]
from elleipein [to fall short] * see ellipsis
源自 elleipein [達(dá)不到標(biāo)準(zhǔn)] *參見 ellipsis

【引伸】
ellip.tically
adv.（副詞）