expressing the situation of something that is or appears to be enclosed or surrounded by something else

I'm living in London

dressed in their Sunday best

she saw the bus in the rear-view mirror

expressing a period of time during which an event happens or a situation remains the case

they met in 1885

at one o'clock in the morning

I hadn't seen him in years

expressing the length of time before a future event is expected to happen

I'll see you in fifteen minutes

(often followed by a noun without a determiner) expressing a state or condition

to be in love

I've got to put my affairs in order

a woman in her thirties

expressing inclusion or involvement

I read it in a book

acting in a film

indicating someone's occupation or profession

she works in publishing

indicating the language or medium used

say it in French

put it in writing

as an integral part of (an activity)

in planning public expenditure it is better to be prudent

expressing a value as a proportion of (a whole)

a local income tax running at six pence in the pound

expressing movement with the result that someone or something becomes enclosed or surrounded by something else

come in

presently the admiral breezed in

expressing the situation of being enclosed or surrounded by something

we were locked in

expressing arrival

the train got in very late

(of the tide) rising or at its highest level

present at one's home or office

we knocked at the door but there was no one in

fashionable

pastels and light colours are in this year

the in thing to do

(of the ball in tennis and similar games) landing within the designated playing area

batting

which side is in?

a position of influence with someone powerful or famous

she got an in with the promising new artist

the chemical element of atomic number 49, a soft silvery-white metal occurring naturally in association with zinc and some other metals

the chemical element indium

Indiana (in official postal use)