verb (used without object)
to make a choice; choose (usually followed by for).
opt out, to decide to leave or withdraw:
to opt out of the urban rat race and move to the countryside.
when intr, foll by for. to show preference (for) or choose (to do something) See also opt in See also opt out
1877, from French opter “to choose” (16c.), from Latin optare “choose, desire” (see option). To opt out is attested from 1922. Related: Opted; opting.
optesthesia op·tes·the·sia (ŏp’tĭs-thē’zhə) n. Visual sensibility to light stimuli.
[op-tik] /ˈɒp tɪk/ adjective 1. of or relating to the eye or sight. 2. . noun 3. the eye. 4. a lens of an instrument. /ˈɒptɪk/ adjective 1. of or relating to the eye or vision 2. a less common word for optical noun 3. an informal word for eye1 /ˈɒptɪk/ noun 1. (Brit) trademark […]
[op-ti-kuh l] /ˈɒp tɪ kəl/ adjective 1. of, relating to, or applying or the principles of optics. 2. constructed to assist sight or to correct defects in vision. 3. of or relating to sight or vision; visual. 4. of or relating to the eye. 5. of or relating to an optician or opticians or to […]
- Optical aberration
optical aberration n. The failure of light rays from a point source to form a perfect image after passing through an optical system.