Final answer:
The suffix '-oid' in the term sphenoid stands for 'resemble,' indicating that the sphenoid bone has a shape that resembles a certain object, such as a butterfly or bat.
Step-by-step explanation:
In the term sphenoid, the suffix "-oid" is derived from Ancient Greek, meaning 'resemble'. Therefore, the term sphenoid would suggest something that resembles the sphenoid bone, which is a bone located at the base of the skull and resembles a butterfly or bat in shape. In the context of anatomy, this term does not explicitly refer to a type of joint. Instead, it is describing the physical form of the bone itself.