~ 1
■ suffix forming adjectives meaning:
1》 productive of: loathsome.
2》 characterized by being: wholesome.
↘apt to: tiresome.
Origin
OE -sum .
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~ 2
■ suffix (forming nouns) denoting a group of a specified number: foursome.
Origin
OE sum 'some'.
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~ 3
■ combining form denoting a portion of a body, especially a particle of a cell: chromosome.
Origin
from Gk sōma 'body'.