| 释义 |
〔ectogenous〕Able to live and develop outside a host, as certain pathogenic microorganisms do.外生的：能够在寄生在主体外生长发育的，如病毒性微生物〔ringbone〕A bony growth on the fetlock, pastern, or coffin bone of a horse's foot, usually causing lameness.环骨瘤：长在马蹄的长丛毛、魈或蹄骨上的外生骨瘤，常引起跛足 |