noun, plural sterna
[stur-nuh] /ˈstɜr nə/ (Show IPA), sternums.
Anatomy, Zoology. a bone or series of bones extending along the middle line of the ventral portion of the body of most vertebrates, consisting in humans of a flat, narrow bone connected with the clavicles and the true ribs; breastbone.
the ventral surface of a body segment of an arthropod.
noun (pl) -na (-nə), -nums
(in man) a long flat vertical bone, situated in front of the thorax, to which are attached the collarbone and the first seven pairs of ribs Nontechnical name breastbone
the corresponding part in many other vertebrates
a cuticular plate covering the ventral surface of a body segment of an arthropod Compare tergum
sternum ster·num (stûr’nəm)
n. pl. ster·nums or ster·na (-nə)
A long flat bone, articulating with the cartilages of the first seven ribs and with the clavicle, forming the middle part of the anterior wall of the thorax, and consisting of the corpus, manubrium, and xiphoid process. Also called breastbone.
A long, flat bone located in the center of the chest, serving as a support for the collarbone and ribs. Also called breastbone. See more at skeleton.
[stur-nyuh-tey-shuh n] /ˌstɜr nyəˈteɪ ʃən/ noun 1. the act of sneezing. sternutation /ˌstɜːnjʊˈteɪʃən/ noun 1. a sneeze or the act of sneezing sternutation ster·nu·ta·tion (stûr’nyə-tā’shən) n. The act of sneezing. A sneeze.
noun, Chemical Warfare. 1. a chemical agent causing nose irritation, coughing, etc. noun 1. a substance that causes sneezing, coughing, and tears; used in chemical warfare
[ster-noo-tuh-tawr-ee, -tohr-ee, -nyoo-] /stərˈnu təˌtɔr i, -ˌtoʊr i, -ˈnyu-/ adjective 1. Also, sternutative. causing or tending to cause sneezing. noun, plural sternutatories. 2. a sternutatory substance. sternutatory /stɜːˈnjuːtətərɪ; -trɪ/ adjective 1. causing or having the effect of sneezing noun (pl) -tories 2. an agent or substance that causes sneezing sternutatory ster·nu·ta·to·ry (stûr-nyōō’tə-tôr’ē, -nōō’-) adj. Causing […]
adverb 1. toward the stern; astern.