The suffix "-oid" means the same as "quasi", so "resembling", "like". A *groupoid* is a quasi-group, like a group. There are hundreds of words in that category, covering many scientific disciplines.

In the "early use of mathematical words" database I find:

250 BC: conchoid

200 BC: cissoid

400: trapezoid

1650: trochoid

1672: ellipsoid

1685: cochleoid

1830: epicycloid

1836: paraboloid

1837: strophoid

1844: centroid

1872: geoid, gyroid

1878: nephroid

1879: deltoid

1881: prismatoid

1891: cuboid

1935: matroid

The Woid on-Oid by William Safire comments on the proliferation of -oids:

We all know that the use of -oid to create a noun has been growing by
leapoids and bounds. Among the earliest were android, or "automaton
in human form," created in 1727, and asteroid, "small body like a
star," in 1802. Scientists and mathematicians were especially
attracted to the ending, juggling their cylindroids, globoids and
spheroids.

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