choroid
noun [ C ] anatomy specialized uk/ˈkɔː.rɔɪd/ us/ˈkɔːr.ɔɪd/
脉络膜（位于巩膜和视网膜之间，含有血管和色素）
the layer between the retina and the outer white covering of the eye, that contains blood vessels and pigment (= substance giving colour)
choroid
adjective medical specialized uk/ˈkɔː.rɔɪd/ us/ˈkɔːr.ɔɪd/
绒毛膜样的
resembling the chorion (= the outer membrane of the sac around the developing foetus)