1. Without generating heat
   "luminescent organisms emit heatless light"

See also: cold

• Harry S Truman
• Harry Sinclair Lewis
• Harry Stack Sullivan
• Harry Truman
• harsh
• harsh on
• harsh-voiced
• harshen
• harshly
• harshness
• hart
• Hart Crane
• hart's-tongue
• hart's-tongue fern
• hartal
• Harte
• hartebeest
• Hartford
• Hartford fern
• Hartley
• hartshorn
• harum-scarum
• haruspex
• Harvard
• Harvard University