[ in-fruh ]
/ ˈɪn frə /


below, especially when used in referring to parts of a text.

Nearby words

  1. infortunate,
  2. infortunately,
  3. infortune,
  4. infotainment,
  5. infotech,
  6. infra dig,
  7. infra dig.,
  8. infra-,
  9. infra-red,
  10. infrabulge

Compare supra.

Origin of infra

1730–40; < Latin infrā; cf. under


a prefix meaning “below,” used, with second elements of any origin, in the formation of compound words: infrasonic; infrared.

Origin of infra-

< Latin, representing infrā, adv. or preposition

ut infra

[ oo t in-frah; English uht in-fruh ]
/ ʊt ˈɪn frɑ; English ʌt ˈɪn frə /


as (stated or shown) below: used in a book, text, etc.

vide infra

[ wee-de in-frah; English vahy-dee in-fruh, vee- ]
/ ˈwi dɛ ˈɪn frɑ; English ˈvaɪ di ˈɪn frə, ˈvi- /


see below (used especially to refer a reader to parts of a text). Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for infra

British Dictionary definitions for infra


/ Latin (ˈɪnfrə) /


(esp in textual annotation) below; further on



below; beneath; afterinfrasonic; infralapsarian

Word Origin for infra-

from Latin infrā

ut infra

/ Latin (ʊt ˈɪnfrɑː) /

as below
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for infra
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for infra



Inferior to, below, or beneath:infrasonic.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.