Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Biology Depending on light for life and growth.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. that depends on light for life and growth

from the GNU version of the Collaborative International Dictionary of English

  • adj. Requiring light to live; incapable of living without light.

from The Century Dictionary and Cyclopedia

  • Living habitually in the light: said of a class of plantcells.

Etymologies

Sorry, no etymologies found.

Examples

  • * an electronic instrument whose sellers claim uses "photobiotic energy" and "deeply penetrating mega-frequency life-force energy waves" to strengthen the immune system and prevent symptoms associated with H1N1 viral infection

    Consumerist

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