in vain
— Adverb
– English
~ to no avail; "he looked for her in vain"; "the city fathers tried vainly to find a solution"
intake valve
— Noun
– English
~ a valve that controls the flow of fluid through an intake
ileocecal valve
— Noun
– English
~ valve between the ileum of the small intestine and the cecum of the large intestine; prevents material from flowing back from the large to the small intestine
independent variable
— Noun
– English
~ (statistics) a variable whose values are independent of changes in the values of other variables
internal jugular vein
— Noun
– English
~ a continuation of the sigmoid sinus of the dura mater; joins the subclavian vein to form the brachiocephalic vein
innominate vein
— Noun
– English
~ veins formed by the union of the internal jugular and subclavian veins
inferior ophthalmic vein
— Noun
– English
~ a vein that drains a venous network in the floor and medial wall of the eye socket
inferior cerebral vein
— Noun
– English
~ veins that drain the undersurface of the cerebral hemispheres and empty into the cavernous and transverse sinuses