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Untenable vs D - What's the difference?

untenable | d |

As an adjective untenable

is not able to be held, as of an opinion or position; unholdable, indefensible.

As a letter d is

the fourth letter of the.

As a numeral d is

cardinal number five hundred (500).

As a symbol d is

deuterium, when it needs to be distinguished from ordinary hydrogen.

untenable

English

Adjective

(en adjective)
  • Not able to be held, as of an opinion or position; unholdable, indefensible.
    • The theory of cold fusion was untenable .

    Usage notes

    * Nouns often used with "controversial": argument, doctrine, theory, hypothesis, view, position, notion, etc..

    Antonyms

    * tenable * defensible

    Related terms

    * tenant

    External links

    * * *

    d

    Translingual

    {{Basic Latin character info, previous=c, next=e, image= (wikipedia d)

    Etymology 1

    Modification of capital letter D, from (etyl) letter .

    Letter

  • The fourth letter of the .

    • Usage notes

    The letter d is used in the alphabets of many languages, and in several romanization systems of non-Latin scripts to represent the (.

    See also

    (Latn-script) * (select similar letters and symbols) * (other scripts) * See

    Etymology 2

    Lower case form of upper case roman numeral D, a standardization of D or notch.

    Alternative forms

    * D,

    Numeral

  • cardinal number five hundred (500).
    • Usage notes
    With a bar over the numeral, i.e., as d, it represents five hundred thousand (500,000).
    See also
    * Lesser roman numeral symbol: * Greater roman numeral symbol: *

    Etymology 3

    Symbol

    (Voiced alveolar plosive) (head)
  • the (path-independent, ) differential of a quantity
  • voiced alveolar plosive

    • See also

    * (mathematics) {{Letter , page=D , NATO=Delta , Morse=-ยทยท , Character=D4 , Braille=? }} Image:Latin D.png, Capital and lowercase versions of D , in normal and italic type Image:Fraktur letter D.png, Uppercase and lowercase D in Fraktur Image:Uncial d.png, Approximate form of upper case letter D in uncial script that was the source for lower case d ----