SKIP TO CONTENT

J

Definitions of J
  1. noun
    the 10th letter of the Roman alphabet
    synonyms: j
    see moresee less
    type of:
    alphabetic character, letter, letter of the alphabet
    the conventional characters of the alphabet used to represent speech
  2. noun
    a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second
    synonyms: joule, watt second
    see moresee less
    type of:
    energy unit, heat unit, work unit
    a unit of measurement for work
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘J'. Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors. Send us feedback
Word Family
EDITOR'S CHOICE

Look up J for the last time

Close your vocabulary gaps with personalized learning that focuses on teaching the words you need to know.

VocabTrainer - Vocabulary.com's Vocabulary Trainer