WD meaning in Space Science ?

Answer:

What is Word mean?

In linguistics, a word of a spoken language can be defined as the smallest sequence of phonemes that can be uttered in isolation with objective or practical meaning. In many languages, words also correspond to sequences of graphemes ("letters") in their standard writing systems that are delimited by spaces wider than the normal inter-letter space, or by other graphical conventions. The concept of "word" is usually distinguished from that of a morpheme, which is the smallest unit of word which has a meaning, even if it will not stand on its own together or in other small words.

In many languages, the notion of what constitutes a "word" may be learned as part of learning the writing system. This is the case for the English language, and for most languages that are written with alphabets derived from the ancient Latin or Greek alphabets.

There still remains no consensus among linguists about the proper definition of "word" in a spoken language that is independent of its writing system, nor about the precise distinction between it and "morpheme". This issue is particularly debated for Chinese and other languages of East Asia, and may be moot for Afro-Asiatic languages.

In English orthography, the letter sequences "rock", "god", "write", "with", "the", "not" are considered to be single-morpheme words, whereas "rocks", "ungodliness", "typewriter", and "cannot" are words composed of two or more morphemes ("rock"+"s", "un"+"god"+"li"+"ness", "type"+"writ"+"er", and "can"+"not"). In English and many other languages, the morphemes that make up a word generally include at least one root (such as "rock", "god", "type", "writ", "can", "not") and possibly some affixes ("-s", "un-", "-ly", "-ness"). Words with more than one root ("[type][writ]er", "[cow][boy]s", "[tele][graph]ically") are called compound words.

Words are combined to form other elements of language, such as phrases ("a red rock", "put up with"), clauses ("I threw a rock"), and sentences ("I threw a rock, but missed").

reference

Full Form	Category
Water Dispersal	Academic & Science
White Dwarf	Academic & Science
Windows and Doors	Academic & Science
Winn Dixie	Business
Weight Distribution	Business
Wet/Dry	Business
When Distributed	Business
Window Dressing	Business
Without Duplicate	Business
Water Displacement	Chemistry
Water Dispersant	Chemistry
Water Dry	Chemistry
Wilmer Davis	Community
Wylie Dufresne	Community
Writer's Digest	Community
Wireless communications Devices	Computer and Networking
Working Document	Computer and Networking
Write Data	Computer Assembly Language
Was Dead	Computing
What Doing	Computing
Warlords of Destruction	Computing
Watch Dogs	Computing
Web Dynpro	Computing
Wikidata	Computing
Wellesley District	Country Specific
Data File (infoselect)	File Type
Water Displacment	General
Water Dispersing	General
Www Darkplaces	General
Water Dessicant	General
Water Dragons	General
Water Disapation	General
Water Dog	General
White Dot	General
Wedding Dresses	General
We Did	General
Wheel Drive	General
Weiner Dog	General
Walt Disney	General
Wrist Dam	General
Warp Drive	General
Work Done	General
Working Day	General
Warranty Deed	General
Ward Demektir	General
W Diesel	General
Western Diet	General
Welding Direction	General
Wolf's Dragoons	General
Wicked Doofus	General
Well Dressings	General
Water Deterrent	General
Wrong Dimensions	General
Wrecks Derailleurs	General
Water Distrubutor	General
What Does	General
Working Distance	General
Www Dot	General
Wiener Dog	General
Wendy Davis	General
Water Displaying	General
Water Displace	General
Wanderer D	General
West Deptford	General
Will Die	General
Water Displacing	Governmental
Working Draft	Governmental
Wilson Democrat	Governmental
Wide Differential	Governmental
Without Division	Governmental
Ward Duty	Governmental
Way Delayed	Governmental
Wisconsin Dells, Wisconsin	Governmental
Western Economic Diversification Canada	Governmental
Whats Doing	Internet
Water Dragon	Medical
Wilson Disease	Medical
Well Developed	Medical
Wound	Medical
Warm/Dry	Medical
Wrist Disarticulation	Medical
Wack Dental	Medical
Whipple’s Disease	Medical
Whatever, Dude	Messaging
Well Done	Messaging
Western Digital	Messaging
Weather Downtime	Messaging
Water Displacer	Military and Defence
Working Dog	Military and Defence
War Department	Military and Defence
Weapon Damage	Military and Defence
Weak Dipole	Physics Related
Washer/dryer	Real Estate
Watford postcode area	Regional
Working Directory	Softwares
Width	Space Science
Wired Discrete	Space Science
Word	Space Science
Work Day	Space Science
Whirling Disease	Sports
Wood Duck	Sports
Wing Defence	Sports
Western Division	Sports
DAS Air Cargo	Transport & Travel
Wardair Canada	Transport & Travel