pt.
The abbreviation for "before noon" is "AM." It is the abbreviation for the Latin phrase ante meridian which means "before the high point (of the sun)"Similarly, "PM" is the abbreviation for the Latin post meridian, meaning "after the high point"
i.e. pt.12
Pt is an abbreviation of point; a point is used in printing (and word processing) as a measurement of text size. It's equivalent to 1/72 of an inch.
The abbreviation of electron is e−.
The abbreviation of "have not" is "haven't."
"GPA" is already an abbreviation for "grade point average". There is no further abbreviation for the abbreviation.
Pt
The abbreviation for "before noon" is "AM." It is the abbreviation for the Latin phrase ante meridian which means "before the high point (of the sun)"Similarly, "PM" is the abbreviation for the Latin post meridian, meaning "after the high point"
ppt.
Grade Point Average
Grade Point Average
Could be PAA (abbreviation for point after attempt)
°C (Example: 0°C is the freezing point of water)
It's the abbreviation of point of view. The perspective the story is told in is the point of view.
i.e. pt.12
Could be Grade Point Average
Propagating Point-Source Response