(in electrical engineering and electronics) the imaginary quantity equal to the square root of minus one.
1The tenth letter of the alphabet.
- 1.1Denoting the next after I (or H if I is omitted) in a set of items, categories, etc.
2"J"A shape like that of a capital J (without a crosspiece).
3archaic Used instead of I as the Roman numeral for one in final position.‘between ij and iij of the clock’
1Jack (used in describing play in card games).
2Japan (international vehicle registration).
4(in titles) Journal (of)‘J. Biol. Chem’