Definition that contains ptos
- leptospirosis an infectious disease cause by leptospira and transmitted to humans from domestic animals; characterized by jaundice and fever
- weil's disease a severe form of leptospirosis in human beings
- genus schizaea type genus of the Schizaeaceae cosmopolitan especially in tropics; small leptosporangiate ferns: curly grass fern
- polypodiales true (leptosporangiate) ferns
- caspase any of a group of proteases that mediate apoptosis
- gleichenia type genus of Gleicheniaceae: leptosporangiate ferns with sessile sporangia; South Africa to Malaysia and New Zealand
- schizaea type genus of the Schizaeaceae cosmopolitan especially in tropics; small leptosporangiate ferns: curly grass fern
- filicales true (leptosporangiate) ferns
- order filicales true (leptosporangiate) ferns
- swamp fever an infectious disease cause by leptospira and transmitted to humans from domestic animals; characterized by jaundice and fever