on

US /ɑːn/
UK /ɑːn/
"on" picture
1.

physically in contact with and supported by (a surface)

:
•
The book is on the table.
•
She put her hand on my shoulder.
:
uponatop
2.

indicating a day or date

:
•
The meeting is on Friday.
•
Her birthday is on October 20th.
3.

indicating a state or condition

:
•
The house is on fire.
•
He is on duty.
1.

in operation or active

:
•
Turn the light on.
•
The television is on.
:
activeoperatingrunningpowered
2.

continuing in a process or activity

:
•
Keep on working.
•
The show must go on.
:
forwardaheadcontinuously
1.

taking place or scheduled to take place

:
•
Is the concert still on?
•
The game is on for tomorrow.
:
scheduledhappeningoccurring