Definition of: subtilize

(sut′l·īz, sub′tə·līz) v. ·ized, ·iz·ing v.t.
1. To make subtle or subtile; refine.
2. To make acute; sharpen, as the senses.
3. To discuss or argue subtly.
—v.i.
4. To make subtle distinctions; use subtlety. [<Med. L subtilizare <L subtilis SUBTLE]
—sub′til·i·za′tion noun