Where does “subellipsoid” come from?

subellipsoid (English) comes from English ellipsoid, from English -oid, from Latin -oides, from Greek -ο, from Ancient Greek εἶδος, from Spanish -scopio, from Latin -scopium, from Ancient Greek σκοπέω — to see, to look, to observe.

subellipsoid (English): Somewhat ellipsoid

Definitions

Somewhat ellipsoid

Ancestry of “subellipsoid”, step by step

subellipsoid traces back through two separate lines of ancestry.

via English ellipsoid

Step	Language	Word	Meaning
1	English	ellipsoid	A surface, all of whose cross sections are...
2	English	-oid	Of similar form to, but not the same as. Having...
3	Latin	-oides	-like, -form
4	Greek	-ο	ending for accusative singular forms (eg δρόμος, ψήφος); and some vocative singular forms
5	Ancient Greek	εἶδος	That which is seen: form, image, shape;...
6	Spanish	-scopio	-scope
7	Latin	-scopium	—
8	Ancient Greek	σκοπέω	I look, look at, behold; I examine, inspect; 413...
9	Ancient Greek	σκοπός	watcher, lookout; protector, guardian; spy, scout
10	Ancient Greek	σκέπτομαι	I look at, examine; I examine, consider, think
11	Proto-Hellenic	sképťomai	to look at
12	Proto-Indo-European	spéḱyeti	to be looking at, to keep looking at
13	Proto-Indo-European	speḱ-	to see, to look, to observe

via English sub

Step	Language	Word	Meaning
1	English	sub	A submarine; A submarine sandwich: a sandwich...
2	English	substitute	To use in place of something else, with the same...
3	Middle English	substituten	—
4	Latin	substitutus	substituted
5	Latin	substituo	I place next to, under, or instead of; I...
6	Latin	statuo	I set up, station; I establish, determine, fix; I...
7	Latin	stātus	fixed, set, having been set
8	Latin	stō	to stand
9	Proto-Italic	staēō	stand
10	Proto-Indo-European	sth₂éh₁yeti	to stand
11	Proto-Indo-European	*steh₂-	—

Every word from Proto-Indo-European speḱ- →Every word from Proto-Indo-European spéḱyeti →Every word from English -oid →