Nouns Ending in OID and Containing TO

This list gathers 94 English nouns ending in OID and containing TO, such as Factoid, Deltoid, Mastoid, Planetoid, Parasitoid, Toroid and Toxoid. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review pluralization and capitalization rules.

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Starts with A
7 words
autotetraploid
athetoid
autopolyploid
allantoid
adamantoid
arctoid
adultoid
Starts with B
1 words
blastoid
Starts with C
15 words
cystoid
cactoid
cestoid
chloritoid
cleidomastoid
chromatoid
clavodeltoid
cottoid
crescentoid
cyprinodontoid
ceratocricoid
ceratohyoid
catostomoid
cetorhinoid
ceratitoid
Starts with D
4 words
deltoid
demantoid
diamantoid
dermestoid
Starts with E
16 words
elliptoid
epileptoid
eutectoid
elephantoid
entomoid
ergatoid
erichtoid
endotoxoid
elementoid
entopterygoid
epitoxoid
etheostomoid
entosphenoid
evolutoid
enchodontoid
embiotocoid
Starts with F
2 words
factoid
favositoid
Starts with G
3 words
granitoid
graphitoid
goniatitoid
Starts with H
5 words
herpetoid
hypereutectoid
hydatoid
hypoeutectoid
hypsilophodontoid
Starts with K
1 words
ketosteroid
Starts with L
2 words
lentoid
labyrinthodontoid
Starts with M
4 words
mastoid
mattoid
monocytoid
manatoid
Starts with N
1 words
nematoid
Starts with O
5 words
odontoid
octopoid
octoploid
orbitosphenoid
occipitosphenoid
Starts with P
7 words
planetoid
parasitoid
plutoid
prismatoid
parotoid
phytoid
paramastoid
Starts with Q
1 words
quadricrescentoid
Starts with S
12 words
sternocleidomastoid
sternomastoid
stromatoporoid
spermatozoid
speltoid
spermatoid
satellitoid
scolytoid
scaphitoid
scatophagoid
sarcocystoid
solenostomoid
Starts with T
3 words
toroid
toxoid
trematoid
Starts with V
2 words
vegetoalkaloid
volutoid
Starts with Z
3 words
zoophytoid
zygotoid
zaphrentoid

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