10-letter words starting with pho
- photophase — a phase of light in a cycle of light and dark
- photophobe — a person who suffers from or displays symptoms of photophobia
- photophone — a device for the communication of sound on a beam of light. Used to transmit the first ever wireless telephone messages.
- photophony — the practice of using a photophone
- photophore — a luminous organ found in certain fishes and crustaceans.
- photoprint — a photographic print.
- photoshoot — a session in which a photographer takes pictures of someone for publication
- photostory — photo essay.
- phototaxis — movement of an organism toward or away from a source of light.
- phototonus — the normal condition of sensitiveness to light in organisms or their organs.
- phototoxic — (of cosmetics, skin creams, etc) making the skin hazardously sensitive to sunlight
- phototoxin — Biochemistry. a plant toxin causing an allergic reaction when touched or eaten by a susceptible person or animal subsequently exposed to sunlight.
- phototrope — a type of robot that either seeks or flees from sources of bright light
- phototroph — any organism that uses light as its principal source of energy.
- phototropy — an alteration in the colour of certain substances as a result of being exposed to light of different wavelengths