加

добавлять / добавить; увеличивать / увеличить

to add; (math.) plus; to increase; to augment; (used before a disyllabic verb, often after an adverb like 不, 大, 稍 etc, to indicate that the action applies to sth previously mentioned, as in 稍加改良 "make some minor improvements to (it)"); Canada (abbr. for 加拿大); surname Jia