quadruplet

Definitions of quadruplet
  1. noun
    one of four children born at the same time from the same pregnancy
    synonyms: quad
    see moresee less
    type of:
    sib, sibling
    a person's brother or sister
  2. noun
    a set of four similar things considered as a unit
    synonyms: quadruple, quartet, quartette
    see moresee less
    type of:
    set
    a group of things of the same kind that belong together and are so used
  3. noun
    the cardinal number that is the sum of three and one
    synonyms: 4, IV, Little Joe, four, foursome, quartet, quatern, quaternary, quaternion, quaternity, tetrad
    see moresee less
    type of:
    digit, figure
    one of the elements that collectively form a system of numeration
Word Family
EDITOR’S CHOICE

Test prep from the experts

Boost your test score with programs developed by Vocabulary.com’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.

SAT/PSAT

$29.95
  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week

TOEFL

$29.95
  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week

ACT

$29.95
  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week