| POISONWOODS | • poisonwoods n. Plural of poisonwood. • POISONWOOD n. a poisonous tree of the cashew family native to Florida.
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| NONPOISONOUS | • nonpoisonous adj. Not poisonous. • non-poisonous adj. Alternative spelling of nonpoisonous.
 • NONPOISONOUS adj. not poisonous.
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| OPISTHOTONOS | • opisthotonos n. (Medicine) Sustained tetanic spasm in which the body is bent backwards and stiffened, as produced by various diseases. • OPISTHOTONOS n. extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region, etc.
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| PODOCONIOSES | • PODOCONIOSIS n. endemic elephantiasis of the lower legs. | 
| PODOCONIOSIS | • podoconiosis n. (Pathology) An endemic form of nonfilarial elephantiasis. • PODOCONIOSIS n. endemic elephantiasis of the lower legs.
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| COLONOSCOPIES | • colonoscopies n. Plural of colonoscopy. • COLONOSCOPY n. examination of the inside of the colon using a colonoscope, a flexible viewing instrument passed into the colon through the anus.
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| ODONTOLOGISTS | • odontologists n. Plural of odontologist. • ODONTOLOGIST n. a student of odontology.
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| ONOMATOPOESIS | • onomatopoesis n. Onomatopoeia. • ONOMATOPOESIS n. onomatopoeia, also ONOMATOPOEIA, ONOMATOPOIESIS.
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| ODONATOLOGISTS | • odonatologists n. Plural of odonatologist. • ODONATOLOGIST n. one who studies dragonflies.
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| ONOMASIOLOGIES | • ONOMASIOLOGY n. the branch of semantics concerned with the meanings of and meaning relations between individual words. | 
| ONOMATOLOGISTS | • onomatologists n. Plural of onomatologist. • ONOMATOLOGIST n. one who studies onomatology, the science of names.
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| ONOMATOPOIESES | • ONOMATOPOIESIS n. onomatopoeia, also ONOMATOPOEIA, ONOMATOPOESIS. | 
| ONOMATOPOIESIS | • onomatopoiesis n. Onomatopoeia. • ONOMATOPOIESIS n. onomatopoeia, also ONOMATOPOEIA, ONOMATOPOESIS.
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| OPISTHOTONOSES | • OPISTHOTONOS n. extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region, etc. | 
| SIPHONOPHOROUS | • siphonophorous adj. Of or relating to the siphonophores. • SIPHONOPHOROUS adj. of or like a siphonophore, a type of colonial hydrozoan.
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| MONOPOLISATIONS | • MONOPOLISATION n. the act of monopolising, also MONOPOLIZATION. |