12 Letter Words
10 Letter Words
ophthalmia
20
ophidiaria
16
orthopedia
16
orthopnoea
15
orthoptera
15
odontomata
13
odontalgia
12
osteocolla
12
ostensoria
10
ouvirandra
14
9 Letter Words
omophagia
17
omophoria
16
octahedra
15
octohedra
15
ommatidia
14
orchestra
14
opsomania
13
ossifraga
13
oenothera
12
oligaemia
12
oceanaria
11
oenomania
11
osmeteria
11
osteomata
11
otorrhoea
12
8 Letter Words
occipita
14
omnivora
13
orchella
13
oiticica
12
ombrella
12
opercula
12
opuscula
12
odontoma
11
oedemata
11
oligemia
11
ongaonga
10
operetta
10
oliguria
9
orchilla
13
7 Letter Words
organza
17
oquassa
16
onychia
15
ootheca
12
ophiura
12
ovipara
12
octapla
11
ommatea
11
ostraka
11
ouguiya
11
osmunda
10
oversea
10
ocarina
9
omniana
9
opuntia
9
oropesa
9
osteoma
9
ostraca
9
ondatra
8
oogonia
8
otalgia
8
olearia
7
olestra
7
ossetra
7
oxymora
19
6 Letter Words
onycha
14
ochrea
11
optima
10
oedema
9
orisha
9
ottava
9
obelia
8
omenta
8
omerta
8
orbita
8
oscula
8
organa
7
oraria
6
osetra
6
ozaena
15