say it: jay
j is a noun meaning "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". It carries 2 recorded senses.
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
the 10th letter of the Roman alphabet
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for j come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.