Godan verb with 'ru' ending, Intransitive verb
to apply (of a rule); to be applicable (of standards, lessons, ideas, etc.); to hold true (e.g. of a description); to fit; to be suitable (e.g. of a word); to meet (requirements); to fulfill (conditions); to come under (a heading)
Usually written using kana alone
この規則は1年生には当てはまらない。This rule doesn't apply to first-year students.
Also written 当て嵌まる【あてはまる】