the world > space > extension in space > reduction in size or extent > reduce in size or extent [verb (transitive)] > to suitable dimensions (3)
to cut down to size: to reduce to suitable dimensions; figurative to reduce to a true or proper level of importance.
Suitable or normal dimensions. rare except in to cut (chop,etc.) down to size: see to cut down 8 at cut, v. phrasal verbs. colloquial.