a. Ichth. [f. mod.L. truttāceus (Willughby, a. 1672), f. late L. trutta TROUT: see -ACEOUS.] Related to the trout.
1753. Chambers, Cycl. Suppl., Salmo, the salmon…. It is distinguished from other fish of the truttaceous kind by these characters. Ibid., s.v., The truttaceous fishes are divided into two tribes.
