a. [ Infra + sternal. ] (Anat.) Below the sternum; as, the infrasternal depression, or pit of the stomach. [ 1913 Webster ]
‖n. [ NL., fr. Gr. mikro`s small + &unr_; star. ] (Paleon.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows. [ 1913 Webster ]
a. (Anat.) Situated above, or anterior to, the sternum. [ 1913 Webster ]