Found 1,923 definitions starting with OR:

order guttiferalesorder gymnophionaorder haemosporidiaorder haplosporidia
order heliozoaorder helotialesorder hemipteraorder heterosomata
order heterotrichal…order hymenogastral…order hymenopteraorder hypericales
order hypermastiginaorder hypocrealesorder hyracoideaorder ichthyosauria
order ictodosauriaorder in councilorder insectivoraorder insessores
order isoetalesorder isopodaorder isopteraorder isospondyli
order juglandalesorder jungermannial…order lagomorphaorder laminariales
order lechanoralesorder lepidodendral…order lepidopteraorder lichenales
order lilialesorder lobataorder loricataorder lycoperdales
order lycopodialesorder lyginopterida…order madreporariaorder mallophaga
order malvalesorder mantophasmato…order mapperorder marattiales
order marchantialesorder marsupialiaorder mecopteraorder moniliales
order monotremataorder mucoralesorder musalesorder myaceae
order mycelia steri…order mycoplasmatal…order mycrosporidiaorder myricales
order myrtalesorder mysidaceaorder myxobacteralesorder myxobacteria
order myxobacterial…order myxosporidiaorder naiadalesorder neuroptera
order nidularialesorder notostracaorder nudibranchiaorder number
order octopodaorder odonataorder oedogonialesorder of australia
order of battleorder of businessorder of friars min…order of knighthood
order of magnitudeorder of merit of t…order of monte verg…order of operations
order of our lady o…order of paymentorder of precedenceorder of saint bene…
order of successionorder of the dayorder of the medjid…order of the purple…
order olealesorder ophioglossalesorder opilionesorder opuntiales
order orchidalesorder ornithischiaorder orthopteraorder ostariophysi
order ostracodermiorder outorder palmalesorder pandanales
order papaveralesorder paperorder parietalesorder passeriformes
order pectinibranch…order pediculatiorder pedipalpiorder pelecaniformes
order pelycosauriaorder perciformesorder percomorphiorder perissodactyla
order peronosporalesorder pezizalesorder phalangidaorder phallales
order phasmatodeaorder phasmidaorder pholidotaorder picariae