卵円 is read as らんえん (ranen) and means oval.
らんえん
ranen
らんえんそう
fenestra ovalis (of the ear)
らんけい
oval shape
たまご
(an expert) in the making
らんかん
fallopian tube
らんし
ovum
らんぱく
white of an egg
らんおう
egg yolk
たまごやき
fried egg
らんせいどうぶつ
oviparous animal
たまごりょうり
egg dishes
らんぺんはっせい
merogony
らんようしゅ
egg-laying breed (esp. of chicken)