phosphor

As a noun phosphor

is (chemistry) any of various compounds of transition metals or of rare earths that exhibits phosphorescence.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between phosphor and null

is that phosphor is (chemistry) any of various compounds of transition metals or of rare earths that exhibits phosphorescence while null is zero, nil; the cardinal number before einn.

As nouns the difference between phosphor and fluorophor

is that phosphor is (chemistry) any of various compounds of transition metals or of rare earths that exhibits phosphorescence while fluorophor is .

As nouns the difference between phosphor and semiconductor

is that phosphor is any of various compounds of transition metals or of rare earths that exhibits phosphorescence while semiconductor is a substance with electrical properties intermediate between a good conductor and a good insulator.

As a proper noun Phosphor

is alternative name of Phosphorus, the morning star.

As nouns the difference between phosphor and couch

is that phosphor is (chemistry) any of various compounds of transition metals or of rare earths that exhibits phosphorescence while couch is couch.

As nouns the difference between phosphor and phosphori

is that phosphor is any of various compounds of transition metals or of rare earths that exhibits phosphorescence while phosphori is plural of phosphorus.

As a proper noun Phosphor

is alternative name of Phosphorus, the morning star.

As nouns the difference between taxonomy and phosphor

is that taxonomy is the science or the technique used to make a classification while phosphor is (chemistry) any of various compounds of transition metals or of rare earths that exhibits phosphorescence.