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optics

noun

(used with a singular verb) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision.
(used with a plural verb) the way a situation, action, event, etc., is perceived by the public or by a particular group of people: The optics on this issue are pretty good for the Democrats. Administrators worry about the bad optics of hiring new staff during a budget crisis.

adjective

of or relating to the eye or sight.
optical.

noun

the eye.
a lens of an optical instrument.

noun

(functioning as singular) the branch of science concerned with vision and the generation, nature, propagation, and behaviour of electromagnetic light

adjective

of or relating to the eye or vision
a less common word for optical

noun

an informal word for eye 1

noun

British trademark a device attached to an inverted bottle for dispensing measured quantities of liquid, such as whisky, gin, etc

n.“science of sight and light,” 1570s, from optic; also see -ics. Used for Medieval Latin optica (neuter plural), from Greek ta optika “optical matters,” neuter plural of optikos “optic.” adj.early 15c., from Middle French optique, obtique (c.1300) and directly from Medieval Latin opticus “of sight or seeing,” from Greek optikos “of or having to do with sight,” from optos “seen, visible,” from op-, root of opsesthai “be going to see,” related to ops “eye,” from PIE *okw- “to see” (see eye (n.)). n.

The science concerned with the properties of light, its refraction and absorption, and the refracting media of the eye.

adj.

Of or relating to the eye or vision.
Of or relating to the science of optics or optical equipment.

The scientific study of light and vision. The study of optics led to the development of more general theories of electromagnetic radiation and theories of color.

Relating to or involving the eye or vision.

The branch of physics dealing with light. (See electromagnetic waves, laser, lens, reflection, and refraction.)