What does DD stand for?

Data Deficient (IUCN Red List of Threatened Species category)

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

Other Resources:

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Damaged Dwelling (FEMA) Daman & Diu (territory in India) Dangerous Drop Dangerous, Detected Failure Danny DeVito (actor) DareDevil (comic book superhero) Darier Disease (aka Darier-White disease) Darling Daughter Darn Devil (Slingo game) Darwin Day		Data Definition Data Deliverable Data Depository Data Description Data Detect Data Dictionary Data Directory Data Discrepancy Data Display Data Distribution

Samples in periodicals archive:

Many seahorses are included on the International Union for Conservation of Nature (IUCN) red list of threatened species as vulnerable or data deficient, as not enough is known about the species.

Seahorses thriving in cleaner river Thames, scientists say

But the species is categorised as data deficient by the World Conservation Union," she said.

Baby seahorses are first for marine zoo; WALES

In addition, 380 mammal species are assessed as Data Deficient.

A song for brake dancing; ANSWERS TO CORRESPONDENTS