sinusoid

/หˆsaษชnษ™sษ”ษชd/
noun
  1. 1

    A curve having the shape of a sine wave.

  2. 2

    Any of several channels through which venous blood passes in various organs.

adjective
  1. 1

    Sinusoidal.

  2. 2

    Characteristic of a sinus.

Source: https://en.wiktionary.org/wiki/sinusoid