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(in-trav″ă-sā′shŏn) [intra- + vas, vessel] The penetration of a blood or lymphatic vessel by cells, fluids, or other materials that are not normally found there. Common forms of intravasation include the invasion of an artery or vein by cancer or the inadvertent injection of contrast material into an artery or vein.


(in″tră-vas′kyŭ-lăr) [intra- + vascular] Within blood vessels. intravascularly (in″tră-vas′kyŭ-lăr-lē), adv.


(in″tră-vē′nŭs) [intra- + venous] ABBR: IV. Within or into a vein.


(in″tră-ven-trik′yŭ-lăr) [intra- + ventricular] Within a ventricle. intraventricularly (in″tră-ven-trik′yŭ-lăr-lē), adv.

intraventricular conduction delay

(ĭn″tră-vĕn-trĭk′ū-lĕr) ABBR: IVCD. Abnormally slow conduction of electricity through the ventricular walls of the heart, resulting in a QRS complex on the electrocardiogram that lasts longer than 0.12 sec but less than 0.16 sec. IVCD is sometimes referred to as an incomplete bundle branch block.


(in″tră-ves′ĭ-kăl) [intra- + vesical] Within the urinary bladder.


(ĭn″tră-vī′tl) [″ + vita, life] During life. SYN: intra vitam.

intra vitam

(ĭn′tră vī′tăm) [L.] Intravital.

intravitreal, intravitreous

(in″tră-vi′trē-ăl, in″tră-vi′trē-ŭs) [intra- + L. vitreus, glassy] Within the vitreous body of the eye.


(ĭn-trĭn′zĭk) [L. intrinsicus, on the inside] 1. Belonging to the essential nature of a thing. It is both essential and natural, not merely apparent or accidental. SYN: inherent; innate. 2. In anatomy, structures belonging solely to a certain body part, as intrinsic nerves or muscles. 3. Due to causes or elements within the body, an organ, or a part.


[L. intro, internally, on the inside] Prefix meaning in or into. SEE: intra-.


(ĭn″trō-dūs′ĕr) [L. intro, into, + ducere, to lead] Intubator.


(ĭn″trō-flĕk′shŭn) [″ + flexus, bent] A bending inward.


(in-trō′ĭt-ŭs) pl. introitus [L. introitus, entrance, entryway, passage] An opening or entrance into a space or cavity.

i. vaginae The exterior orifice of the vagina.


(ĭn″trō-mĭsh′ŭn) [″ + mittere, to send] An insertion or placing of one part into another, esp. insertion of the penis into the vagina.


(ĭn-trō-mĭt′ĕnt) Conveying or injecting into a cavity or body.


(ĭn′trŏn) The noncoding space between the discrete coding regions (exons) of the DNA ...

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