noun🔗ShareThe act of irradiating; emission of rays of light."The plant's growth was directly affected by the irradiance it received from the grow lamp. "energyphysicsscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareThat which irradiates or is irradiated; lustre; splendour; brilliancy."The irradiance of the midday sun made it difficult to read my book outside. "energyphysicsappearanceChat with AIVocabulary GamePractice Reading
noun🔗ShareThe radiant power received by unit area of surface"The plant on the windowsill thrived because the irradiance from the morning sun was strong enough to fuel photosynthesis. "energyphysicsscienceChat with AIVocabulary GamePractice Reading