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option premium
option price
option seller
option series
option writer
optional
options on physicals
opto-
optoelectronics
optometrist
optometry
optophone
opulent
opuntia
opus
opus anglicanum
opuscule
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optoelectronics
op·to·e·lec·tron·ics [ òptō i lek trónniks ]


noun 
Definition:
 
branch of electronics: the branch of electronics dealing with devices that generate, modulate, transmit, and sense electromagnetic radiation in the visible-light, infrared, and ultraviolet ranges ( takes a singular verb )

[Mid-20th century. < Greek optos "seen, visible"]

op·to·e·lec·tron·ic adjective
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