Psychrophiles, psychrotrophs, mesophiles, thermophiles, and extremophiles are categories of microorganisms that grow at temperatures ranging from subfreezing to higher than that of boiling water.
Psikrofiller, psikrotroflar, mezofiller, termofiller ve ekstremofiller, donmadan kaynayan sudan daha yüksek sıcaklıklarda büyüyen mikroorganizma kategorileridir.