cleavage n. the first stage of embryonic development, in wh...
obturator n. 1. any item that blocks an opening...
neuropathology n. the study of diseases of the nervous syst...
autoimmunity n. a condition in which the body’s immune syst...
haptic Müller-Lyer illusion an illusion in touch in which t...
indefinite article in linguistics, an article (a or an in E...