ontogeny
— Noun
– English
～ (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level; "he proposed an indicator of osseous development in children"
ontological
— Adjective
– English
～ of or relating to ontology; "ontological speculations"
ontology
— Noun
– English
～ the metaphysical study of the nature of being and existence
ontology
— Noun
– English
～ (computer science) a rigorous and exhaustive organization of some knowledge domain that is usually hierarchical and contains all the relevant entities and their relations
onus
— Noun
– English
～ an onerous or difficult concern; "the burden of responsibility"; "that's a load off my mind"
onward motion
— Noun
– English
～ the act of moving forward (as toward a goal)
onward
— Adverb
– English
～ in a forward direction; "go ahead"; "the train moved ahead slowly"; "the boat lurched ahead"; "moved onward into the forest"; "they went slowly forward in the mud"
onward
— Adverb
– English
～ forward in time or order or degree; "from that time forth"; "from the sixth century onward"
onwards
— Adverb
– English
～ in a forward direction; "go ahead"; "the train moved ahead slowly"; "the boat lurched ahead"; "moved onward into the forest"; "they went slowly forward in the mud"
Onychium
— Noun
– English
～ small terrestrial ferns of Old World tropics and subtropics: clawed ferns; sometimes placed in family Cryptogrammataceae
onychogalea
— Noun
– English
～ a genus of Macropodidae
onycholysis
— Noun
– English
～ separation of a nail from its normal attachment to the nail bed
Onychophora
— Noun
– English
～ enigmatic small elongated wormlike terrestrial invertebrates of damp dark habitats in warm regions; distinct from the phylum Annelida; resemble slugs with legs and are sometimes described as the missing link between arthropods and annelids
onychophoran
— Noun
– English
～ any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms
onychosis
— Noun
– English
～ any disease or disorder of the nails
onymous
— Adjective
– English
～ bearing a name; "articles in magazines are usually onymous"
onyx
— Noun
– English
～ a chalcedony with alternating black and white bands; used in making cameos
onyx marble
— Noun
– English
～ a hard compact kind of calcite
onyxis
— Noun
– English
～ toenail having its free tip or edges embedded in the surrounding flesh