We found 2 dictionaries that define the word drought index:

Tech (2 matching dictionaries)

1. Glossary of Meteorology (No longer online)
2. National Weather Service Glossary (No longer online)

Phrases: palmer drought index, more... ▸ Words similar to drought index ▸ Usage examples for drought index ▸ Idioms related to drought index ▸ Wikipedia articles (New!) ▸ Words that often appear near drought index ▸ Rhymes of drought index ▸ Invented words related to drought index