tr.v. un·der·count·ed, un·der·count·ing, un·der·counts
To record fewer than the actual number of (persons in a census, for example).

un′der·count′ n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Statistics) statistics an incomplete count
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(v. ˌʌn dərˈkaʊnt; n. ˈʌn dərˌkaʊnt)
1. to count less than the full number or amount of, esp. in an attempt to falsify records, returns, etc.
2. a count or total that is less than the actual number or amount.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Despite the overall reduction of the undercount estimate, the demographers found more undocumented immigrants than they had expected.
He said that during the last census in 1991, Brent, in North London, had the worst record for people not returning forms and its local authority was thought to have failed to attract pounds 200million of funding as a consequence of the undercount.
The manual recount of presidential ballots subsequently conducted by newspapers indicates Bush probably would have won the presidential election even if the Supreme Court had not stopped the recount in its tracks.(3) And because the census appears to have been successful in reducing the undercount to its lowest level in American history, any need for statistical adjustment has diminished dramatically.(4) One cannot help but ask whether the sound and fury of either controversy, in the end, signified anything of lasting political importance.
Wajir leaders fear a dramatic undercount because they say there are too few census takers, too little transport money and enumeration sites are widely separated and hard to access.
Foes of the citizenship question fear it would lead to an undercount of minority groups, particularly Hispanics.
Joined by the court's four liberals, Chief Justice John Roberts called the Trump administration's rationale for including the question "contrived" and added, "we cannot ignore the disconnect between the decision made and the explanation given." Inclusion of the question could have led to an undercount of California's large population of unauthorised immigrants, not to mention people of colour, especially Latinos; low-income people; renters; children; young men and limited English speakers, among others.
Dating to the 1990s, research has shown estimates of Medicaid coverage based on the Current Population Survey Annual Social and Economic Supplement (CPS ASEC) have consistently produced an undercount of beneficiaries compared to Medicaid enrollment records.
Missing less than 5 percent of the population might seem unimportant given the size of the country, but even a 1 percent undercount could cost a state a U.S.
Those groups allege that the addition of the citizenship question is unconstitutional because it will lead to a disproportionate undercount of Latino and Asian residents, non-citizens and their family members.
Advocacy groups and city officials are concerned about an undercount in the looming 2020 census that could have a major impact on funding, and they're looking to the real estate industry for help.