Which Noun Is Vivisection?

The action of cutting, surgery or other invasive treatment of a living organism for the purposes of physiological or pathological scientific investigation.

What does vivisection mean?

1 : the cutting of or operation on a living animal usually for physiological or pathological investigation broadly : animal experimentation especially if considered to cause distress to the subject. 2 : minute or pitiless examination or criticism.

Is medius a noun?

noun, plural me·di·i [mee-dee-ahy]. Anatomy. the middle finger.