afterload1
/ˈɑːftələʊd/ /ˈaftələʊd/noun
Physiology. Originally (in experimental studies of muscle contraction): a load added to a strip of muscle after contraction has begun. In later use also: the force that a ventricle of the heart must generate in order to eject blood (determined largely by vascular resistance).
Origin
Mid 19th century (in an earlier sense). From after- + load.
afterload2
/ˈɑːftələʊd/ /ˈaftələʊd/verb
1 [with object] Physiology. To subject (a muscle) to an afterload.
2 [with object] Medicine. In radiotherapy: to load (a previously implanted receptacle) with a radioactive substance; to insert (a radioactive substance) into such a receptacle.
Origin
Late 19th century; earliest use found in Brain: a journal of neurology. Probably partly from afterload, and partly from after- + load.
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