月经期口出血：月经时口腔粘膜出血- autopolyploid
- autopolyploidy
- autoprecipitin
- autoprotection
- autoproteolysis
- autoprothrombin
- autoprotolysis
- octabenzone
- octacosane
- octacosanol
- octadecanoate
- octamethyl pyrophosphoramide
- octan
- octane
- octanoic acid
- octapeptide
- octaploid
- octarius
- octavalent
- octazamide
- octet
- octicizer
- octigravida
- Octin
- octipara