| CHONDROCRANIUMS | • CHONDROCRANIUM n. the cartilaginous parts of an embryonic cranium. | 
| CONNOISSEURSHIP | • connoisseurship n. The state or act of being a connoisseur. • CONNOISSEURSHIP n. the state of being a connoisseur.
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| COUNTERSHADINGS | • countershadings n. Plural of countershading. • COUNTERSHADING n. cryptic coloration of an animal with parts normally in shadow being light and parts normally illuminated being dark thereby reducing shadows and contours.
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| ENANTIOMORPHOUS | • enantiomorphous adj. Of or pertaining to enantiomorphs or enantiomorphism; enantiomorphic. • ENANTIOMORPHOUS adj. of or like an enantiomorph, also ENANTIOMORPHIC.
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| NEIGHBOURLINESS | • neighbourliness n. Britain standard spelling of neighborliness. • NEIGHBOURLINESS n. the state of being neighbourly, also NEIGHBORLINESS.
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| ORNITHORHYNCHUS | • ornithorhynchus n. A platypus (genus Ornithorhynchus). • Ornithorhynchus prop.n. A taxonomic genus within the family Ornithorhynchidae – the single species Ornithorhynchus anatinus…
 • ORNITHORHYNCHUS n. the duckbill platypus.
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| OVERNOURISHMENT | • overnourishment n. Excessive nourishment. | 
| REHUMANIZATIONS | • rehumanizations n. Plural of rehumanization. | 
| SULPHINPYRAZONE | • sulphinpyrazone n. Alternative form of sulfinpyrazone. • SULPHINPYRAZONE n. a drug used to treat gout.
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| THERMOJUNCTIONS | • thermojunctions n. Plural of thermojunction. • THERMOJUNCTION n. a junction of two dissimilar conductors used to produce a thermoelectric current.
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| UNCOMPREHENSIVE | • uncomprehensive adj. (Archaic) Unable to comprehend. • uncomprehensive adj. (Obsolete) incomprehensible.
 • UNCOMPREHENSIVE adj. not comprehensive.
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| UNDERNOURISHING | • undernourishing v. Present participle of undernourish. • UNDERNOURISH v. to nourish insufficiently.
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| UNNEWSWORTHIEST | • UNNEWSWORTHY adj. not newsworthy. | 
| UNRIGHTEOUSNESS | • unrighteousness n. The state of being unrighteous. • UNRIGHTEOUSNESS n. the state of being unrighteous.
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| UNSEAWORTHINESS | • unseaworthiness n. The state or condition of being unseaworthy. • UNSEAWORTHINESS n. the state of being unseaworthy.
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| ZINJANTHROPUSES | • ZINJANTHROPUS n. a type of australopithecine, remains of which were discovered in the Olduvai Gorge in Tanzania in 1959. |