蜱亚目：包括蜱总科(Ixodoidae)，后者又包括硬蜱科(Ixodidae)和软蜱科(Argasidae)- N.T.P.
- asbestosis
- A-scan
- ascarcide
- ascariasis
- ascaricidal
- ascarid
- ascarides
- Ascaridia
- ascaridiasis
- Ascaridoidea
- ascaridole
- ascaridosis
- ascariosis
- ascaris
- Ascaris
- Ascarops
- ascending
- ascensus
- ascertainment
- Ascetospora
- A.S.C.H
- aschelminth
- Aschelminthes
- Ascher's negative glass-rod phenomenon,postive glass-rod phenomenon,syndrom