writing done with a typewriter
"The old manuscript was preserved because it was typed on a vintage 1950s machine rather than written by hand."
Assigning or classification by type.
"The librarian spent hours typing the books into separate sections based on their subject matter."
In plain English: Typing is hitting keys on a keyboard to make letters and symbols appear on a screen.
"She spent her afternoon working on typing up the meeting notes for everyone to read later."
present participle of type
"She is typing her essay on the computer while listening to music."
In plain English: To type is to press keys on a keyboard to create text.
"She spent all afternoon typing her report on the computer keyboard."
The word typing comes from combining the verb type with the suffix -ing to form a present participle. It entered English as a natural grammatical construction rather than through borrowing or semantic shift.