Haematic \H[ae]*mat"ic\ (h[-e]*m[a^]t"[i^]k), a. [Gr. a"imatiko`s] Of or pertaining to the blood; sanguine; brownish red. [1913 Webster] {H[ae]matic acid} (Physiol.), a hypothetical acid, supposed to be formed from hemoglobin during its oxidation in the lungs, and to have the power of freeing carbonic acid from the sodium carbonate of the serum. --Thudichum. [1913 Webster]