a prefix meaning “within,” used in the formation of compound words:
[ahb in-trah; English ab in-truh] /ɑb ˈɪn trɑ; English æb ˈɪn trə/
from inside; from within.
[in-trah moo-rohs; English in-truh myoo r-ohs] /ˈɪn trɑ ˈmu roʊs; English ˈɪn trə ˈmyʊər oʊs/
within the walls, as of a city.
within; inside: intravenous
word-forming element meaning “within, inside, on the inside,” from Latin intra “on the inside, within,” related to inter “between,” from PIE *en-t(e)ro-, from root *en “in” (see in). Commonly opposed to extra-, but the use of intra as a prefix was rare in classical Latin.
A prefix meaning “inside” or “within,” as in intravenous, within a vein.
[in-truh-ab-dom-uh-nl] /ˌɪn trə æbˈdɒm ə nl/ adjective, Anatomy. 1. being within the abdomen. 2. going into the abdomen, as an injection.
- Intra-aortic balloon device
intra-aortic balloon device in·tra-a·or·tic balloon device (ĭn’trə-ā-ôr’tĭk) n. An inflatable balloon placed into the descending aorta to assist the heart in pumping blood.
- Intra-aortic balloon pump
intra-aortic balloon pump n. A pump connected to a balloon device that is inserted into the descending aorta to provide temporary assistance to the heart in the management of left ventricular failure.
intra-arterial in·tra-ar·te·ri·al (ĭn’trə-är-tēr’ē-əl) adj. Within arteries or an artery.