cyst, cist

Cyst or cyst means a swelling or lump on a body, made of a sac filled with fluid--
He wants the doctor to look at the cyst on his leg.
He has had a cyst removed before, so they are going to do a biopsy.

Cyst or cyst also mean a kind of cell or sac containing reproductive bodies or a dormant animal--
If you look at the slide through your microscope, you will see a cyst containing reproductive cells.

Cist or cist ( most commonly rhymes with cyst ) means a box or casket for religious uses; a prehistoric tomb or casket--
The archaeologists are very excited about the cist they found at the excavation site.
The cist seems to contain a skeleton; we'll have to dig it out before we're sure.

Now that you know that, you can say--
"He believes the cyst was caused by handling a cist containing human remains, but it seems unlikely."