Naming (from example in course reader)

[cara_Budzinski_3D]

On page 102 of the course reader, the name for 2-cyclopropyl-pentane is found from the given molecule. I understand how this conclusion was reached, but I do not understand why it is cyclopropyl instead of cyclopropane. So my question is this: what is the reasoning for inserting a -pyl suffix (just in general)?

[Joseph_Ghaly_2L]

Propyl has only 7 hydrogens while propane has 8 hydrogens. The carbon that is bonded to the parent chain is also bonded to two other carbons, so it can only be bonded to one hydrogen. The other two carbons in the cyclopropyl group have 3 hydrogens each, so in total there are three carbons and seven hydrogens.

In general, the -yl suffix usually implies that one hydrogen is missing from the -ane form of the given hydrocarbon.