Word Direct Answers

infra-red

infra-red is defined in Webster's Unabridged Dictionary (1913) with 1 sense. The full text of each entry is reproduced verbatim below.

Definitions

1.Lying outside the visible spectrum at its red end; -- said of rays less refrangible than the extreme red rays.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

What does "infra-red" mean?

Reverse-dictionary questions

Definition-first questions whose answer is infra-red.

What is lying outside the visible spectrum at its red end; -- said of rays less refrangible than the extreme red rays called?

Sources

Definitions: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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