List of 15-letter words beginning with

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There are 8 fifteen-letter words beginning with OS

OSCILLOGRAPHIES	• OSCILLOGRAPHY n. use of an oscillograph.
OSMOREGULATIONS	• osmoregulations n. Plural of osmoregulation. • OSMOREGULATION n. regulation of osmotic pressure esp. in the body of a living organism.
OSTENSIBILITIES	• OSTENSIBILITY n. the state of being ostensible, intended for display.
OSTEOARTHRITICS	• osteoarthritics n. Plural of osteoarthritic. • OSTEOARTHRITIC n. one suffering from osteoarthritis.
OSTEOMYELITIDES	• osteomyelitides n. Plural of osteomyelitis.
OSTEOMYELITISES	• osteomyelitises n. Plural of osteomyelitis. • OSTEOMYELITIS n. inflammation of bone marrow.
OSTEOPATHICALLY	• osteopathically adv. By means of osteopathy. • OSTEOPATHIC adv. relating to osteopathy.
OSTREICULTURIST	• ostreiculturist n. A breeder or farmer of oysters. • OSTREICULTURIST n. one who breeds oysters.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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See this list for:

English Wiktionary: 89 words
Scrabble in French: 7 words
Scrabble in Spanish: 2 words
Scrabble in Italian: 55 words
Scrabble in German: no word
Scrabble in Romanian: 24 words

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