noun Download 🔗Share A partially shaded area around the edges of a shadow, especially an eclipse. Examples : "During the solar eclipse, we could see a dim penumbra surrounding the darkest part of the moon's shadow. " astronomy physics space nature Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A region around the edge of a sunspot, darker than the sun's surface but lighter than the middle of the sunspot. Examples : "The astronomer pointed out the penumbra around the sunspot, a region slightly darker than the surrounding surface but brighter than the core. " astronomy physics space phenomena nature Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An area of uncertainty or intermediacy between two mutually exclusive states or categories. Examples : "The student's understanding of the topic was in the penumbra between knowing and not knowing; she could answer some questions, but struggled with others. " area aspect philosophy theory space Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An area that lies on the edge of something; a fringe. Examples : "The sunlight filtering through the leaves created a penumbra of shifting shadows on the picnic blanket. " area appearance physics astronomy Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Something related to, connected to, and implied by, the existence of something else that is necessary for the second thing to be full and complete in its essential aspects. Examples : "The company's success cast a penumbra of opportunity onto the small town, bringing new jobs and increased prosperity that were dependent on the company's continued growth. " aspect part theory philosophy abstract Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (in "ischaemic penumbra", after a stroke) A region of the brain that has lost only some of its blood supply, and retains structural integrity but has lost function. Examples : "After the stroke, doctors worked quickly to save the penumbra, the area of Sarah's brain still potentially recoverable if blood flow could be restored. " medicine physiology anatomy organ body disease part biology biochemistry condition function Chat with AIVocabulary GamePractice Reading