what does this term means?
It is a visual artist who specializes in drawing cartoons or comics.
Cartoonist
is a visual artist who specializes in drawing cartoons (individual images) or comics 
what was alex raymond's profession? He was a cartoonist.
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Cartoonist [SEP] Introduction
A cartoonist (also comic strip creator, comic book artist, graphic novel artist, or comic book illustrator) is a visual artist who specializes in drawing cartoons (individual images) or comics (sequential images). Cartoonists include the artists who handle all aspects of the work and those who contribute only part of the production. Cartoonists may work in many formats, such as booklets, comic strips, comic books, editorial cartoons, graphic novels, manuals, gag cartoons, illustrations, storyboards, posters, shirts, books, advertisements, greeting cards, magazines, newspapers, and video game packaging.