H-R diagram

[eych-ahr]

Phonetic (Standard)IPA

noun

Astronomy.

Hertzsprung-Russell diagram.

Discover More

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Whereas the periodic table groups together similar chemical elements—for example, placing all noble gases, such as helium, neon and argon, into one column—the H-R diagram groups together stars passing through similar stages of life.