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1. The ordinal number matching the number 40 in a series.
2. One of 40 equal parts.

for′ti·eth adv. & adj.
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.


a. being the ordinal number of forty in numbering or counting order, position, time, etc. Often written: 40th
b. (as noun): he was the fortieth.
1. (Mathematics)
a. one of 40 approximately equal parts of something
b. (as modifier): a fortieth part.
2. (Mathematics) the fraction equal to one divided by 40 ()
[Old English fēowertigotha]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈfɔr ti ɪθ)

1. next after the thirty-ninth; being the ordinal number for 40.
2. being one of 40 equal parts.
3. a fortieth part, esp. of one (1/40).
4. the fortieth member of a series.
[before 1100; Middle English fourtithe, Old English fēowertigotha. See forty, -eth2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fortieth - position 40 in a countable series of thingsfortieth - position 40 in a countable series of things
rank - relative status; "his salary was determined by his rank and seniority"
Adj.1.fortieth - the ordinal number of forty in counting orderfortieth - the ordinal number of forty in counting order
ordinal - being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
الأرْبَعينجُزء من أربعين
fertugastifertugasti hluti
1/4040.ıncıkırkıncıkırkta biri


A. ADJcuadragésimo
the fortieth anniversaryel cuarenta aniversario
B. N
1. (in series) → cuadragésimo/a m/f
2. (= fraction) → cuarentavo m, cuadragésima parte f
see fifth for usage
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


(= fortieth part) → quarantième m
(= fortieth birthday) → quarantième anniversaire m
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


adjvierzigste(r, s)
n (= fraction)Vierzigstel nt; (in series) → Vierzigste(r, s) ? also sixth
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


1. adjquarantesimo/a
2. n (in series) → quarantesimo/a; (fraction) → quarantesimo
for usage see fifth
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(ˈfoːti) noun
1. the number or figure 40.
2. the age of 40.
1. 40 in number.
2. aged 40.
ˈforties noun plural
1. the period of time between one's fortieth and fiftieth birthdays.
2. the range of temperatures between forty and fifty degrees.
3. the period of time between the fortieth and fiftieth years of a century.
ˈfortieth noun
1. one of forty equal parts.
2. (also adjective) the last of forty (people, things etc); the next after the thirty-ninth.
having forty (of something). a forty-page index.
ˈforty-year-old noun, adjective
(a person or animal) that is forty years old.
forty winks
a short sleep. He always has forty winks after dinner.

forty (not fourty).
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
He came of a literary family, and, as he says of himself, from his seventh to his fortieth year study and letter occupied all his available time.
Again and once again they fought their battles with savage beast and savage man, and dawn was already breaking when Basuli, for the fortieth time, narrated how he and a handful of his warriors had watched the battle for the golden ingots which the Abyssinians of Abdul Mourak had waged against the Arab raiders of Achmet Zek, and how, when the victors had ridden away they had sneaked out of the river reeds and stolen away with the precious ingots to hide them where no robber eye ever could discover them.
But at this moment the Nautilus, raised by the last waves of the tide, quitted her coral bed exactly at the fortieth minute fixed by the Captain.
Nobody ever HAD built above Fortieth Street--no, says I, nor above the Battery either, before Christopher Columbus discovered America.
Someone proposed a vast bonfire made out of the works of the Forty Academicians into which the Great Victorians might be hurled on their fortieth birthday.
To take possession of the moon in the name of the United States; to add a fortieth State to the Union; to colonize the lunar regions; to cultivate them, to people them, to transport thither all the prodigies of art, of science, and industry; to civilize the Selenites, unless they are more civilized than we are; and to constitute them a republic, if they are not already one!"
The morning of the fortieth dawned, and the young man when he woke gave thanks in an outburst of joy that the danger was passed.
* An old French coin, equal to the two hundred and fortieth part of a pound.
Our digital business posted its fortieth consecutive quarter of double-digit growth, and mobile remained our fastest growing channel."
They were to dig a 50 feet pit but unfortunately it collapsed at about the fortieth feet.
Addressing Journalists in Abuja, one of the leaders of the Movement, Sheikh Sidi Munir Sokoto said the trek was to mark Arbaeen (fortieth day), which is a mourning period in Islam to mark and commemorate 40 days after Ashura, the tragic day that Tyrant Yazid bn Muawiyyah killed Imam Hussain ibn Ali (AS).