1. Of an organism's environment; least favourable for survival
   - pessimum

See also: worst

• phytopathology
• phytophagic
• phytophagous
• phytophilous
• Phytophthora
• Phytophthora citrophthora
• Phytophthora infestans
• phytoplankton
• phytotherapy
• phytotoxin
• pi
• pi-meson
• pia
• pia mater
• Piaf
• piaffe
• Piaget
• Piagetian
• pial
• pianism
• pianissimo
• pianissimo assai
• pianist
• pianistic
• piano