ignis fatuus /igˈnis fatˈū-əs or fatˈŭ-ŭs/

1. Will-o'-the-wisp, the light produced by combustion of marsh-gas, which may lead a traveller into danger
2. Any delusive ideal or hope that may lead one astray

• thermolabile
• thermologies
• thermology
• thermoluminescence
• thermoluminescent
• thermolyses
• thermolysis
• thermolytic
• thermometer
• thermometers
• thermometric
• thermometrical
• thermometrically
• thermometries
• thermometrograph
• thermometry
• thermonasties
• thermonasty
• thermonuclear
• thermonuclear reaction
• thermophil
• thermophile
• thermophiles
• thermophilic
• thermophilous