| orf | A specific disease of sheep and goats, caused by the orf virus. This virus is transmissible to man and characterised by vesiculation and ulceration of the infected site. Synonym: contagious ecthyma, contagious pustular dermatitis, scabby mouth, soremouth. Origin: O.E. Orfcwealm, murrain, fr. Orf, cattle, + cwealm, destruction (05 Mar 2000) |
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| orf virus | The type species of parapoxvirus which causes a skin infection in natural hosts, usually young sheep. Humans may contract local skin lesions by contact. The virus apparently persists in soil. (12 Dec 1998) |
| orfe | <zoology> A bright-coloured domesticated variety of the id. See Id. Source: Websters Dictionary (01 Mar 1998) |
| orfray | <zoology> The osprey. Origin: F. Orfraie. Cf. Osprey, Ossifrage. Source: Websters Dictionary (01 Mar 1998) |