There are 2 definitions of Ld in English:

Ld1

Line breaks: Ld

abbreviation

Lord: Ld Lothian

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day salmanazar
Pronunciation: ˌsalməˈneɪzə
noun
a wine bottle twelve times the standard size...

There are 2 definitions of Ld in English:

LD2

Line breaks: LD

abbreviation

1North American Learning disability (or disabled).
1.1Lethal dose (of a toxic compound, drug, or pathogen). It is usually written with a following numeral indicating the percentage of a group of animals or cultured cells or microorganisms killed by such a dose, typically standardized at 50 per cent ( LD50).
More example sentences
  • That's all well and good, but how do you attach significance to the LD50 numbers that you might find?
  • The LD50 test does not account for drug interactions, and is therefore of little use in such cases.
  • Special calculations are used when translating animal LD50 values to possible lethal dose values for humans.

Definition of Ld in: