Of actions, investigations, etc.: Characterized by special care, careful, accurate, minute.

Minutely exact or careful (in non-moral matters); strictly attentive even to the smallest details; characterized by punctilious exactness.

Of an investigation, a study, an operation, etc.: Conducted with great minuteness. Hence transferred applied to personal agents or their attributes…

Characterized by attention to very small details; concerned with or attentive to minutiae.

Concerned with small things; scrupulous, precise. Cf. cheeseparing, adj.