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  • F.D.
    F.D.
    abbreviation
    Fidei Defensor.
  • FD
    FD
    abbreviation
    Fidei Defensor

F.D.

American  

abbreviation

  1. Fidei Defensor.

  2. fire department.

  3. focal distance.


FD British  

abbreviation

  1. Fidei Defensor

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of FD

Latin: Defender of the Faith

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.

See Examples For:

Mr. Kalinak made the remarks in front of the F.D.

From New York Times ● May 18, 2024

Doctors performed a five-hour operation on Fico, who was initially reported to be in life-threatening condition, according to director of the F.D.

From Seattle Times ● May 16, 2024

She first heard about “Cop City” from a video by F.D.

From Los Angeles Times ● Mar. 15, 2023

When he was just a boy, his mother connected Al with two pastors, Bishop F.D.

From New York Times ● Mar. 9, 2018

It must have been always there, but not till marriage and motherhood, and F.D.

From A Writer's Recollections — Volume 1 by Mrs. Humphry Ward

Known as Reg FD, the rule prohibits public companies from selectively disclosing material, nonpublic information to investors, analysts and other market participants who might trade on the information.

From The Wall Street Journal ● Sep. 25, 2025

Nevertheless, the authors suggest that probiotics could well provide a novel therapeutic approach to treating FD, so they call for more research.

From Seattle Times ● Jul. 12, 2023

In the letter cited by FD, the VEB said Philips is responsible for around 16 billion euros of those losses, by giving false information over the machines affected.

From Reuters ● Sep. 12, 2022

Fitbit Sense $200 $300 34% off One of Fitbit’s more recent product releases, the Sense includes FD clearance and allows you to track your stress levels in addition to measuring your blood oxygen levels.

From The Verge ● Feb. 11, 2022

Which is a problem quite similar to that which served for the first of these constructions, where FD plus 3/2 of GD had to be equal to a given length.

From Treatise on Light by Christiaan Huygens

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