Words starting with O that are validated

• Osmerus — Noun – English ～ type genus of the Osmeridae
• Osmic — Last name – Danish
• osmiridium — Noun – English ～ a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc.
• Osmitrol — Noun – English ～ a diuretic (trade name Osmitrol) used to promote the excretion of urine
• osmium — Noun – Danish ～ grundstof nr. 76; blåhvidt, hårdt og tungt platinm ...
• osmium — Noun – English ～ a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
• Osmo — First name – Danish
• osmoreceptor — Noun – English ～ sensory end organ that responds to changes in osmotic pressure
• osmosis — Noun – English ～ (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
• osmotic — Adjective – English ～ of or relating to osmosis; "osmotic pressure"
• osmotically — Adverb – English ～ by means of osmosis
• Osmund — Last name – Danish
• Osmund — First name – Danish
• osmund — Noun – English ～ any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters
• Osmunda clatonia — Noun – English ～ North American fern having tall erect pinnate fronds and a few sporogenous pinnae at or near the center of the fertile fronds
• Osmunda cinnamonea — Noun – English ～ New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edible
• Osmundaceae — Noun – English ～ large family of ferns widely distributed in temperate and tropical areas
• Osmundsen — Last name – Danish
• Osnes — Last name – Danish
• Osob — First name – Danish

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