What is the medical term meaning the size of an opening?

Answer 1

This is called an anastamosis. Pathologically, this can oocur by formation of a fistula.

Anastimosis

Any connection between two epithelial lined surfaces that is abnormal is referred to as a fistula.
enteric anastomosis
Anastomosis is the medical term meaning new surgical connection.

Answer 2

Suffixes are: -stomosis or -stomy
stomy or ostomy
You mean 5 letters ...it is stomy

Answer 3

An ostomy is a surgically-created opening. A fistula is an abnormal opening or connection.

Answer 4

The lumen is the size of an opening in anatomy. In terms of needle size, the word is guage.
Lumen is the medical term meaning size of opening.

Answer 5

Dilation is the medical term meaning expansion of an opening. -ectasis is the medical terminology combining form meaning abnormal dilation.

Answer 6

stoma

Answer 7

Epigastric.