sinusoid

noun

si·​nu·​soid ˈsīn-yə-ˌsȯid 

ˈsī-nə-

1

: sine curve, sine wave

2

[New Latin sinus] : a minute endothelium-lined space or passage for blood in the tissues of an organ (such as the liver)

Word History

Etymology

Medieval Latin sinus sine

First Known Use

1823, in the meaning defined at sense 1

Medical Definition

sinusoid

noun

si·​nu·​soid ˈsī-n(y)ə-ˌsȯid 

: a minute endothelium-lined space or passage for blood in the tissues of an organ (as the liver)

sinusoidal

ˌsī-n(y)ə-ˈsȯid-ᵊl 

adjective

sinusoidally

-ᵊl-ē 

adverb