What is the meaning of -gen?

A producer of something, or an agent in the production of something.

-gen

-genic

of a certain kind

(substance) that causes what the first term denotes

future tense suffix

forming adjectives

forming nouns

forming adjectives

forming nouns

used to make diminutives

A producer of something

producing something

Rōmaji transcription of げん

-gen

-gen

having sides; -gon

Form of -gan after the vowels E / İ / Ö / Ü.

Source: wiktionary.org