Found 1,919 definitions starting with OR:

order platycteneaorder plecopteraorder plectognathiorder pleuronectifo…
order plumbaginalesorder podicipedifor…order podicipitifor…order polemoniales
order polygonalesorder polymastiginaorder polypodialesorder primates
order primulalesorder proboscideaorder procellariifo…order processing
order processing sy…order protealesorder proturaorder pseudomonadal…
order pseudoscorpio…order pseudoscorpio…order psilophytalesorder psilotales
order psittaciformesorder psocopteraorder pterosauriaorder pulmonata
order pycnogonidaorder radiolariaorder rajiformesorder ranales
order ranunculalesorder raptoresorder rhamnalesorder rheiformes
order rhoeadalesorder rhynchocephal…order rickettsialesorder rodentia
order rosalesorder rubialesorder salicalesorder salientia
order santalalesorder sapindalesorder saprolegnialesorder sarcosporidia
order sarracenialesorder saurischiaorder sauropterygiaorder scandentia
order sclerodermata…order scleropareiorder scorpionidaorder scrophularial…
order secotialesorder selaginellalesorder siluriformesorder siphonaptera
order siphonophoraorder sireniaorder solenichthyesorder solenogastres
order spatangoidaorder sphaerialesorder sphaerocarpal…order sphagnales
order sphenisciform…order spirochaetalesorder squamataorder stegocephalia
order stereospondyliorder stomatopodaorder strigiformesorder struthionifor…
order synentognathiorder taxalesorder temnospondyliorder testacea
order testudinataorder testudinesorder tetraodontifo…order thecodontia
order therapsidaorder thymelaealesorder thysanopteraorder thysanura
order tinamiformesorder torpediniform…order treeorder tremellales
order trichopteraorder trogoniformesorder tuberalesorder tubulidentata
order tulostomatalesorder ulvalesorder umbellalesorder uredinales
order urodellaorder uropygiorder urticalesorder ustilaginales
order volvocalesorder xiphosuraorder xyridalesorder zeomorphi
order zygnemalesorder zygnematalesorder-chenopodialesorder-form
order-in-councilorderableorderboltorderborder
orderedordered departureordered fieldordered pair