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infra-red (adj.)

also infrared, 1873, "below the red" (in the spectrum), from infra- + red (adj.1). As a noun, also from 1873.

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Dictionary entries near infra-red

infra

infra-

infra dig.

infraction

infralapsarian

infra-red

infrasonic

infrastructure

infrequency

infrequent

infrigidation

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