Word: upstream
Part of speech: Adjective
Syllables: up
stream
Definition: towards the leading end (5′;end) of a DNA molecule
Morphemes:
Affix: up-
Language: en
PoS: Prefix
Meaning: Used to indicate higher position or direction, literally or figuratively.
Affix: stream
Language: en
PoS: Noun
Meaning: A particular path, channel, division, or way of proceeding.