Where does “hypocycloidal” come from?

hypocycloidal (English) comes from English hypocycloid, from English cycloid, from English -oid, from Latin -oides, from Greek -ο, from Ancient Greek εἶδος, from Spanish -scopio, from Latin -scopium — to see, to look, to observe.

hypocycloidal (English): In the form of a hypocycloid

Definitions

In the form of a hypocycloid

Ancestry of “hypocycloidal”, step by step

Step	Language	Word	Meaning
1	English	hypocycloid	The locus of a point on the circumference of a...
2	English	cycloid	The locus of a point on the circumference of a...
3	English	-oid	Of similar form to, but not the same as. Having...
4	Latin	-oides	-like, -form
5	Greek	-ο	ending for "accusative singular" forms ; and some...
6	Ancient Greek	εἶδος	That which is seen: form, image, shape;...
7	Spanish	-scopio	-scope
8	Latin	-scopium	—
9	Ancient Greek	σκοπέω	I look, look at, behold; I examine, inspect; 413...
10	Ancient Greek	σκοπός	watcher, lookout; protector, guardian; spy, scout
11	Ancient Greek	σκέπτομαι	I look at, examine; I examine, consider, think
12	Proto-Hellenic	sképťomai	to look at
13	Proto-Indo-European	spéḱyeti	to be looking at, to keep looking at
14	Proto-Indo-European	speḱ-	to see, to look, to observe

Every word from Proto-Indo-European speḱ- →