合膜目：下口亚纲(Hypostomatina)蓝口超目(Nassulidea)中一目自由生活的原虫，常为柱形纤毛原虫，特征为具有合膜，两极动胞器列及完整的体纤毛- Allis's inhaler,sign
- alliteration
- Allium
- allo-
- alloalbumin
- alloantibody
- alloantigen
- allobar
- allobarbital
- allobiosis
- allocentric
- allocheiria
- allochesthesia
- allochiral
- allochiria
- allochroic
- allochroism
- allochromacy
- allochromasia
- allocinesia
- allocolloid
- allocortex
- Allodermanyssus
- allodesmism
- allodiploid