plural autofluorescences
Definition of autofluorescence
: fluorescence emitted naturally by a biological substance
In ultraviolet light, the material has a yellow to silvery autofluorescence that differs from the orange autofluorescence of lipofuscin.— Robert S. Rust and Diane Karluk, New England Journal of Medicine, 29 Aug. 2002 Spectral-imaging technologies will discriminate emissions from multiple fluorescent probes, permitting simultaneous analysis of distinct optical probes and dramatically reducing background autofluorescence.— Harvey R. Herschman, Science, 24 Oct. 2003
Keep scrolling for more
Test Your Vocabulary
Slippery Words Quiz—Changing with the Times
- What is an earlier meaning of nice?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quizWords of Snow and Ice Quiz
A selection of words from the chillier parts of t...
Take the quizSpell It
Can you spell these 10 commonly misspelled words?
Take the quizSCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share autofluorescence
Time Traveler for autofluorescence
The first known use of autofluorescence was in 1916
See more words from the same year