Infra- Definition

infrə
prefix
Inferior to, below, or beneath.
Infrasonic.
American Heritage
affix
Below; beneath.
Infrared.
Webster's New World
adverb
See below; referring to the placement of a particular citation or assertion in a text.
Webster's New World Law
(law) Used to refer to something discussed later.
Wiktionary
Synonyms:
noun

(civil engineering, informal) Infrastructure.

Wiktionary
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Origin of Infra-

  • From Latin īnfrā below n̥dher- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Borrowed from Latin infra, below

    From Wiktionary

  • Shortened form of infrastructure

    From Wiktionary

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