Sponges (Porifera) come in three body forms - asconoid (vase-shaped), syconoid (pleated vase), and leuconoid (network of chambers, like bath sponges). I was wondering what the etymology of these terms was. Since they are scientific terms, I'm assuming Classical origin, but I don't know enough Greek or Latin to recognize the roots.
asco- prefix Lt. < Gk. ἀσκός
Websters: Modern Latin; from Classical Greek askos, wineskin, bladder
syco- prefix Lt. < Gk.
leuco- prefix Lt. < Gk.
< Neo-Latin < Greek leukón, noun use of neuter of leukós white
Wiktionary: Of similar form to, but not the same as. Having the likeness of. Suffix appended to various words to make an adjective form.
human → humanoid
sterol → steroid
planet → planetoid