adj. 1. consisting of fine particles.
Syn. -- powdered, powdery, pulverized, small-grained. [ WordNet 1.5 ]

2. dense or compact in structure or texture, as a wood composed of small-diameter cells.
Syn. -- close-grained. [ WordNet 1.5 ]

3. involving careful consideration of details and fine distinctions; -- of conceptual schemas; as, fine-grained distinctions.
Syn. -- detailed. [ PJC ]