Meaning of sub

sub

Pronunciation: (sub), [key]
— n., v., subbed, sub•bing.
—n.
  1. a submarine.
  2. a substitute.
  3. a submarine sandwich. See
  4. a subcontractor.
  5. a sublieutenant.
  6. a subordinate.
  7. a subaltern.
  8. an advance against one's wages, esp. one granted as a subsistence allowance.
  9. a substratum.
—v.i.
  1. to act as a substitute for another.
—v.t.
  1. to coat (a film or plate) with a substratum.

SUB

Pronunciation: [key]
  1. supplemental unemployment benefits.

sub-

Pronunciation: [key]
  1. 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).
  2. subacetate; subcarbonate; subnitrate.
    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.

sub.

Pronunciation: [key]
  1. subordinated.
  2. subscription.
  3. substitute.
  4. suburb.
  5. suburban.
  6. subway.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
  • sub (Thesaurus)