sub

[ suhb ]
/ sʌb /
Informal.

noun

verb (used without object), subbed, sub·bing.

to act as a substitute for another.

verb (used with object), subbed, sub·bing.

Photography. to coat (a film or plate) with a substratum.

Origin of sub

by shortening of words prefixed with sub-

Regional variation note

Definition for sub (2 of 4)

SUB


supplemental unemployment benefits.

Definition for sub (3 of 4)

sub-


a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy); on this model, freely attached to elements of any origin and used with the meaning “under,” “below,” “beneath” (subalpine; substratum), “slightly,” “imperfectly,” “nearly” (subcolumnar; subtropical), “secondary,” “subordinate” (subcommittee; subplot).
Chemistry.
  1. a prefix indicating a basic compound: subacetate; subcarbonate; subnitrate.
  2. a prefix indicating that the element is present in a relatively small proportion, i.e., in a low oxidation state: subchloride; suboxide.

Origin of sub-

< Latin, combining form representing sub (preposition); akin to Greek hypó; see hypo-

Definition for sub (4 of 4)

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sub

British Dictionary definitions for sub (1 of 3)

sub

/ (sʌb) /

noun

short for several words beginning with sub-See subaltern, subeditor, submarine, subordinate, subscription, substandard, substitute, substratum (def. 6)
British informal an advance payment of wages or salaryFormal term: subsistence allowance

verb subs, subbing or subbed

British Dictionary definitions for sub (2 of 3)

sub.


abbreviation for

subeditor
subito (in music)
subscription
substitute

British Dictionary definitions for sub (3 of 3)

sub-


prefix

situated under or beneathsubterranean
secondary in rank; subordinatesubeditor
falling short of; less than or imperfectlysubarctic; subhuman
forming a subdivision or subordinate part of a wholesubcommittee
(in chemistry)
  1. indicating that a compound contains a relatively small proportion of a specified elementsuboxide
  2. indicating that a salt is basic saltsubacetate

Word Origin for sub-

from Latin sub
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

Medicine definitions for sub

sub-


pref.

Below; under; beneath:subcutaneous.
Subordinate; secondary:subinfection.
Subdivision:subkingdom.
Less than completely or normally; nearly; almost:subfertility.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for sub

sub-


A prefix that means “underneath or lower” (as in subsoil), “a subordinate or secondary part of something else” (as in subphylum.), or “less than completely” (as in subtropical.)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.