a complex number of the form a + bi where a and b are integers.
How To Use Common Punctuation MarksA discussion of each mark follows, in alphabetical order by name of mark. Also includes how to divide words; use of numerals/numbers; possessives; and common errors in punctuation. Apostrophe (‘) is used to indicate possession, contractions, and plurals. Possession: The possessive form of singular nouns ends in ‘s, including nouns ending in s, x, z, ch, or sh. For example: a dog’s life, a lass’s smile. The apostrophe …
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019