急躁性错写：因书写速度过快而不自觉地漏失词语，常伴急躁性错语- protokylol hydrochloride
- Protomastigida
- protomerite
- protometer
- Protominobacter
- Protomonadina
- proton
- protonephridium
- protonephron
- protonephros
- protoneuron
- protonitrate
- proto-oncogene
- Protopam
- protopathic
- protopecten
- protophyllin
- Protophyta
- protophyte
- protophytology
- protopine
- protoplasia
- protoplasm
- protoplasmatic
- protoplasmic