🕒

upon

preposition

/əˈpɒn/

Meaning

on or immediately after

Upon hearing the news, he rushed to the hospital.

on, following

before

upon arrival, upon hearing, upon request

for each, according to

physically in contact with and supported by a surface

in the absence of, or not having something

inside the limits of something, or as part of a particular space or time

except for; if not for

in the direction of