We found 8 dictionaries that define the word nanograms:

General (6 matching dictionaries)

1. nanograms: Merriam-Webster
2. nanograms: Collins English Dictionary
3. nanograms: Vocabulary.com
4. nanograms: Wordnik
5. nanograms: Wiktionary
6. nanograms: Dictionary.com

Medicine (2 matching dictionaries)

7. nanograms: Merriam-Webster Medical Dictionary
8. nanograms: Prostate Cancer Interactive Glossary

(Note: See nanogram as well.)

Definitions from Wiktionary (nanogram) ▸ noun:  (metrology) An SI unit of mass equal to 10⁻⁹ grams. Symbol: ng ▸ Also see nanogram Opposite: megagrams, kilograms, grams, milligrams, micrograms ▸ Words similar to nanograms ▸ Usage examples for nanograms ▸ Idioms related to nanograms ▸ Wikipedia articles (New!) ▸ Popular adjectives describing nanograms ▸ Words that often appear near nanograms ▸ Rhymes of nanograms ▸ Invented words related to nanograms