Medical Terms:
* Sinus: This refers to a cavity or hollow space in the body, especially in the skull.
* Sinusitis: Inflammation of the sinuses.
* Sinusoidal: Relating to or resembling a sine wave, which is a curve that oscillates smoothly.
* Sinusoid: A blood vessel in the liver, spleen, and bone marrow.
* Sinus venosus: A chamber of the heart in some vertebrates.
Other Words:
* Sines: In mathematics, this refers to a trigonometric function.
* Sinuate: Having a wavy or curved edge or outline.
Note: While "sin" is sometimes used to refer to a "sinus," this is actually a different word with a different origin. The word "sin" comes from the Old English word "syn" which means "offense, transgression."