ornithochorous
Spread, or having seeds (in fleshy fruits) that are dispersed, by birds.

ornithocoprophilic
Thriving in the presence of bird excrement.

ornithogenic
Formed by birds.

ornithogeographic
Relating to ornithogeography.

ornithogeographical
Relating to ornithogeography.

ornithoid
Resembling or characteristic of a bird.

ornithoids
plural of ornithoid

ornithologic
Of or relating to ornithology; ornithological.

ornithological
Of or pertaining to ornithology.

ornithomantic
Relating to ornithomancy.

ornithomorphic
Shaped like a bird.

ornithophagic
That feeds on birds

ornithophagous
That feeds on birds.

ornithophilic
Fond of birds.
That feeds on birds.

ornithophilous
Thriving in the presence of birds.
Pollinated by birds.

ornithophobic
Having or relating to ornithophobia, the fear of birds.

ornithopodous
Having feet like those of a bird.
Belonging to the taxonomic clade of Ornithopoda.

ornithoscopic
Relating to birdwatching.

ornithotic
Of or relating to ornithosis.

oroalimentary
Relating to the mouth and to digestion

oroanal
Involving the mouth and anus.

oroantral
Relating to the oral and antral cavities.

oroarctic
Relating to mountains in Arctic regions.

orobanchaceous
Belonging to the family Orobanchaceae, plants mostly parasitic on the roots of other plants.

orobranchial
Relating to the mouth and the gills

orobuccal
Relating to the mouth and the cheek

orocephalic
Relating to the mouth and the head

orocervical
Relating to the mouth and the neck

oroclinal
Relating to an orocline.

orocutaneous
Relating to both the mouth and skin, as for example (a) a rash or lesion affecting both the oral mucosa and the perioral skin or (b) a fistula connecting the oral cavity to the skin of the cheek.

orodental
Relating to the mouth and the teeth

orodigestive
Relating to the mouth and the digestive tract.

orodigitofacial
Alternative form of orofaciodigital.

orodispersable
Alternative form of orodispersible.

orodispersible
Describing a tablet designed to disintegrate in the mouth

oroduodenal
Relating to, or connecting the mouth and the duodenum

oroesophageal
Of or relating to the mouth and the esophagus.

orofacial
Of or affecting both the mouth and face.

orofaciodigital
Affecting the mouth, face, and digits.

orofaecal
Alternative form of orofecal.

orofecal
transmitted from feces to the mouth.

orogastric
Of or pertaining to the mouth and the stomach; usually with reference to an enteral feeding tube passing through the mouth and into the stomach.

orogastroduodenal
Relating to the mouth, stomach and duodenum

orogastrointestinal
Relating to the mouth, stomach and intestines.

orogenetic
Relating to orogenesis.

orogenic
Concerned with orogeny; pertaining to the creation of mountains.

orogenital
Involving the mouth and the genitals.

orogenous
Of or relating to mountain-building; orogenic.

orographic
Of or pertaining to the physical features of mountains, or to orography.
Of or pertaining to the effects of mountains on weather.

orographical
Alternative form of orographic.

orohypopharyngeal
Relating to the orohypopharynx

orolabial
Relating to the mouth and lips.

orolaryngeal
Relating to the mouth and the larynx

orolingual
Relating to the mouth and tongue.

oromandibular
Relating to the mouth and mandible.

oromanual
Relating to the mouth and the hands

oromaxillary
Relating to the mouth and the maxilla.

oromaxillofacial
Relating to the mouth, jaw, and face.

oromediterranean
Relating to mountainous parts of the Mediterranean region

oromotor
Relating to the movement of the mouth.

oromucosal
Relating to, or directed towards the mucous surfaces of the mouth (cheek).

oronasal
Of or pertaining to the mouth and the nose

oronasopharyngeal
Relating to the oronasopharynx

oropharyngoesophageal
Of or relating to the mouth, the pharynx and the esophagus.

orophilous
Liking a subalpine habitat.

orosensory
Relating to oral senses (e.g., taste, oral kinesthetic sense), and especially the innervation that provides for them.

orotactile
That has to do with the sense of touch in mouth.

orotemperate
Describing a temperate mountain climate

orotic
Of or pertaining to orotic acid or its derivatives

orotracheal
Of or pertaining to the mouth and the trachea

orotund
Of a voice: characterized by clarity, fullness, smoothness, and strength of sound; hence, of a person: having a clear, full, and strong voice, appropriate for public speaking, reading aloud, etc.
Of writing, etc.: clear, effective, powerful.
Of speech or writing: bombastic, pompous.

orotunds
plural of orotund

orovaginal
oral and vaginal

orphanish
Resembling or characteristic of an orphan.

orphanlike
Resembling or characteristic of an orphan.

orra
Superfluous; odd, unmatched, left over.
Of people: idle, unemployed, disreputable.

ors
plural of or

orse
otherwise.

orthal
Enacted by vertical motion (in relation to mastication)

orthaxial
that has a straight vertebral axis

orthian
Denoting a type of singing at a very high pitch.

orthic
orthoclastic

orthidic
Relating to orthids.

orthoboric
boric (especially when compared with other oxyacid species of boron)

orthobothriotaxic
Relating to orthobothriotaxy.

orthobunyaviral
Relating to orthobunyaviruses

orthocentral
Relating to the orthocenter.

orthocephalic
normocephalic

orthocephalous
Alternative form of orthocephalic.

orthoceraconic
Relating to, composed of, or having the form of an orthoceracone.

orthochromatic
Being uniformly sensitive across the entire visible range, and thus reproducing colours faithfully
Sensitive to all colours except red

orthochromatophilic
Describing an erythroblast, derived from a polychromatophilic one, that is approaching the colour of a mature erythrocyte

orthochromatophillic
Misspelling of orthochromatophilic.

orthochronous
Describing any Lorentz transformation or Galilean transformation which preserves the direction of time

orthoclasic
Of or relating to orthoclase.

orthocomplemented
Having orthocomplementation.

orthoconglomerate
A conglomerate containing mostly clasts

orthocumulate
A cumulate rock in which the groundmass is of different composition to the accumulated crystals.

orthodiagonal
Having diagonals that are perpendicular to each other.

orthodiagonals
plural of orthodiagonal

orthodiagraphic
Relating to orthodiagraphy.

orthodiphenolic
Relating to an orthodiphenol

orthodont
Of teeth, pointing downwards.

orthodontal
orthodontic

orthodontic
Of, or relating to the dental speciality of orthodontics.

orthodoxic
orthodox

orthodoxical
Dated form of orthodox.

orthodromal
orthodromic

orthodromical
Misspelling of orthodromic.

orthoepic
Of or relating to orthoepy in its various senses:
Of or relating to orthoepy in its various senses:

orthoepical
Synonym of orthoepic.

orthoepistic
Relating to orthoepists or to orthoepy

orthoepistical
orthoepistic

orthoevolutionary
Of or relating to orthoevolution.

orthofacial
Describing surgery to the bones of the face augmented by plastic surgery to the overlying tissue

orthofluvial
Describing the area, next to a river, that is frequently flooded

orthogamous
Of or pertaining to orthogamy

orthogenetic
Of or pertaining to orthogenesis or orthogenetics.

orthogenetical
Alternative form of orthogenetic.

orthogenic
Relating to orthogenesis.
Relating to a school or education system for children with emotional or mental disorders.

orthogenomic
Relating to orthogenomics

orthogeriatric
Describing orthopaedic care for geriatric patients

orthogeris
Orthogeriatrics.

orthoglycaemic
Alternative form of orthoglycemic.

orthognathic
Straight-jawed.
Of or pertaining to the correction of the jaws.

orthognathous
Straight-jawed.

orthogonial
Alternative form of orthogonal.

orthograde
Walking or standing with the body upright.

orthographic
Of a projection used in maps, architecture etc., in which the rays are parallel.
Of, or relating to, orthography.