FromLatindeficiens, present participle ofdeficere(“to lack, fail, be wanting”); seedefect.

• (UK)IPA^(key): /dɪˈfɪʃənt/

• Audio(US):

  (file)

• Rhymes:-ɪʃənt

deficient (comparativemoredeficient,superlativemostdeficient)

1. Lacking somethingessential;often construed within.

   They weredeficient in social skills.

2. Insufficient orinadequate inamount.
   • 1882, Edward Tuckerman, Henry Willey,A Synopsis of the North American Lichens (part 1)

     Apothecia lecanoroid; multilocular; each cell containing a single theke; paraphysesdeficient.

3. (mathematics) Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n)<n.

Seedeficiency § Usage notes.

deficient (pluraldeficients)

1. A person who is deficient.
   • 2004, Steven Noll, James Trent,Mental Retardation in America: A Historical Reader, page316:

     This was justified by the rationale that mentaldeficients, by definition, are not able to succeed in society.

• “deficient”, inWebster’s Revised Unabridged Dictionary, Springfield, Mass.:G. & C. Merriam,1913,→OCLC.
• William Dwight Whitney,Benjamin E[li] Smith, editors (1911), “deficient”, inThe Century Dictionary […], New York, N.Y.:The Century Co.,→OCLC.

Borrowed fromLatindēficientem.

• IPA^(key): (Central)[də.fi.siˈen]
• IPA^(key): (Balearic)[də.fi.siˈent]
• IPA^(key): (Valencia)[de.fi.siˈent]

• Audio(Barcelona):

  (file)

deficient m orf (masculine and feminine pluraldeficients)

1. deficient

• deficiència

• “deficient”, inDiccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition,Institute of Catalan Studies [Catalan:Institut d'Estudis Catalans], April 2007

dēficient

1. third-personpluralfutureactiveindicative ofdēficiō

Borrowed fromFrenchdéficient.

deficient m orn (feminine singulardeficientă,masculine pluraldeficienți,feminine/neuter pluraldeficiente)

1. deficient

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