Words that come from Proto-Indo-European “h₃erdʰ-”
400 words across 27 languages descend from Proto-Indo-European h₃erdʰ- — including orthodox, orthodoxy, arduous, unorthodox, Armagh, orthographic, arboreal, orthostatic.
See the etymology of h₃erdʰ- itself →
English (194)
- orthodox
- orthodoxy
- arduous
- unorthodox
- Armagh
- orthographic
- arboreal
- orthostatic
- arbuscular
- orthonormal
- orthodontic
- orthoclase
- orthopedics
- orthologous
- arboretum
- orthotopic
- orthotropic
- arborescent
- arduously
- orthodontist
- orthophosphate
- orthodontics
- orthographical
- orthopnea
- unorthodoxy
- arboriculture
- orthographically
- orthomolecular
- orthopyroxene
- orthometric
- orthochromatic
- arduousness
- orthogenesis
- orthostasis
- arborvitae
- orthonormality
- orthology
- orthophoto
- orthogenetic
- orthograde
- orthophosphoric
- orthosilicate
- arborescence
- ultraorthodox
- orthovanadate
- orthogneiss
- orthoscopic
- orthotropy
- orthotopically
- nonorthodox
- orthodoxly
- orthosteric
- orthodontically
- orthovoltage
- arboreous
- orthosilicic
- orthoprax
- orthonormalized
- arboriculturist
- orthite
- orthocenter
- orthognathous
- orthoimage
- orthopteran
- tetraethylorthosilicate
- orthorectification
- orthonormalization
- orthokinetic
- orthoptics
- orthoquartzite
- orthogenic
- oxyorthosilicate
- orthodiagonal
- orthochronous
- orthokeratosis
- orthophotography
- nonorthologous
- orthomyxovirus
- orthopinacoid
- arboreality
- orthodoxal
- pedorthist
- pedorthic
- orthomorphic
- orthoformate
- arboreally
- orthopedia
- nonarboreal
- orthopathy
- orthopositronium
- orthoester
- periarbuscular
- orthocomplemented
- ardian
- orthohydrogen
- orthoceratite
- orthopneic
- orthocentre
- orthodrome
- orthodome
- orthotropous
- semiarboreal
- orthoboric
- unorthodoxly
- orthoradial
- orthotomic
- orthosympathetic
- orthomodular
- orthodoxia
- orthocephalic
- arbustive
- antiorthodox
- orthomode
- orthophotograph
- orthocomplementation
- orthoselection
- arboriform
- orthoxylene
- unarduous
- orthopantomography
- orthoacetate
- orthonormalize
- orthonormalised
- orthonormalisation
- orthocephaly
- orthopsychiatry
- orthohelium
- arborealism
- orthoferrite
- biorthonormal
- orthomodularity
- hyperorthodoxy
- pedorthics
- arboricole
- anorthoscopic
- arbuscle
- orthorectify
- orthokinesis
- orthodoxic
- orthonym
- orthometry
- anorthoscope
- orthogeriatric
- orthoquartzitic
- orthopantomographic
- orthoborate
- orthoacid
- biorthonormality
- orthocomplement
- orthoquinone
- orthogeneticist
- orthodoxness
- orthoscope
- orthogon
- nonorthographic
- arborator
- orthodoxally
- orthograph
- unorthographical
- orthocarbonate
- orthonitrate
- orthoscopy
- orthosymplectic
- orthomorphism
- orthophenylene
- orthophony
- orthopsychiatric
- orthopsychiatrist
- orthotone
- orthosubstitution
- anorthopia
- arborary
- ortho-
- orthoarsenite
- orthobenzoquinone
- orthocentric
- orthodoxality
- orthogamous
- orthogamy
- arbust
- orthophosphoric acid
- orthobenzoate
- orthoradially
- orthochrysotile
- orthotetrahedron
- orthobicupola
- orthoexciton
- orthoperiodate
- orthophemistic
- orthosexuality
- arboresce
- inorthodox
- orthotomy
- orthochromite
Irish (61)
- ard-
- Ard-Fheis
- aird
- airde
- ard-diúc
- príomhaird
- ardeaglais
- comh-airde
- ard-daonscoil
- ardchlár
- oll-ardchlár
- ard
- ortadocsacht
- ortadocsach
- ardréim
- airdemhéadracht
- Ard-Ghearmáinis
- Meán-Ard-Ghearmáinis
- Nua-Ard-Ghearmáinis
- ardrúnaíocht
- ardaidhm
- ardaingeal
- ard-aire
- ard-aireacht
- ardchaighdeáin
- ardchathaoir
- ardcheannas
- ardcheann
- ardcheannasach
- Ard-Rúnaí
- ardchúirt
- ard-ghiúiré
- ardmháistir
- Ardmháistir
- ardfholús
- ardiomrá
- ardíomhá
- ardlua
- ardoideachas
- ardmháistreás
- ardmháta
- ard-mhionoifigeach
- ardsagart
- ardscoil
- ardteicneolaíocht
- ardtiarna
- ardtréas
- ardchros
- ard-dílseacht
- ardéirim
- ard-reachtaire
- ardghléine
- ardchumhacht
- ardteicniúil
- ardmhian
- ardmhinicíocht
- ardmholadh
- ardchultúr
- ardcheannasaí
- ardchéimíocht
- ardchríoch
Italian (51)
- albero
- orto-
- arbore
- arduo
- arbusto
- arbustiforme
- arbustivo
- ortopedia
- ortopedico
- ortofrutticolo
- ortografico
- ortoressia
- alberare
- disalberare
- ortodosso
- inalberare
- turboalbero
- ortobicupola
- ortorombico
- arboreto
- ortocentrico
- ortogenesi
- ortoscopia
- ortofonia
- ortofrutticoltore
- ortofrutticoltura
- ortofloricoltura
- ortofloricoltore
- arboreo
- arboricoltura
- arboricoltore
- greco-ortodosso
- monoalbero
- ortocentro
- ortoclasio
- ortocromatico
- ortocromatismo
- ortofonico
- ortofonista
- ortofrenico
- ortofrenopedia
- ortogenetico
- ortomercato
- ortottica
- ortottico
- ortottista
- albereta
- semialbero
- arbustaceo
- arduità
- arduamente