Pronunciation of mathematical symbols
Mathematical
and scientific symbols
pronunciations (in British English - Gimson,1981) of mathematical and scientific symbols are given in
the list below.
(all the&pages in this section need a unicode font
installed -&e.g. Arial Unicode MS, Doulos SIL Unicode, Lucida
Sans Unicode - see: ).
multiplied by
/'m?lt?pla?d ba?/
divided by
/'??v?/ /d?'va?d?d/
/d?'va?d?d/
/'?:kw?lz/
approximately, similar
/?'pr?ks?m?tl?/ /'s?m?l? t?/
&identical
/?k'w?v?l?nt t?/ /a?'dent?kl t?/
not equal to
/'n?t 'i:kw?l t?/
greater than
/'gre?t? &?n/
/'les &?n/
greater than or equal to
/'gre?t? &?n&?r 'i:kw?l t?/
less than or equal to
/'les &?n&?r' i:kw?l t?/
not greater than
/'n?t 'gre?t? &?n/
not less than
/'n?t 'les &?n/
much greater than
/'m?? 'gre?t? &?n/
much less than
/'m?? 'les &?n/
perpendicular to
/p?:p?n'd?kj?l? t?/
parallel to
/'p&r?lel t?/
not equivalent to, not identical to
/'n?t ?k'w?v?l?nt t?/ /'n?t a?'dent?kl t?/
not similar to
/'n?t 's?m?l? t?/
& to the power
/t? &? 'f?:&/ /te &? 'pɑ??
&&to the power n
/t? &? t? d? en&; t? &?
pɑ??r en/
&square root
/ru:t/ /skwe? ru:t/
/kju:b ru:t/
fourth root&
/f?:& ru:t/
/f&k't?:r??l/
/?n'f?n?t?/
&proportional to
/'v??r?z/ &/pr?'p?:??n?l/
double dot
/d?bl d?t/
is to, ratio of
f;&function
/ef/ /'f??k??n/
derivative&
/d&?/ /d?'r?v?t?v/
f double-&second derivative
/'d?bl d&?/ /'sek?nd d?'r?v?t?v/
f triple- f treble-&third derivative
/'tr?pl d&?/ / trebl d&?/
d?'r?v?t?v/
&fourth derivative&
d?'r?v?t?v/
partial derivative, delta
/pa:??l d?'r?v?t?v/ /delt?/
/'?nt?gr?l/
with respect to
/w?& 'r?spekt/
log to the base 2 of x
/l?g t? &? be?s tu: ?v eks/
gives, leads to, approaches
/g?vz/ /li:dz t?/ /?pr????z/
& an element of
/b?'l??z/ /'memb?/ /'el?m?nt/
&is not a member
is not an element of
/n?t&b?'l??/ /n?t ? 'memb?/ /n?t ?n 'el?m?nt/
&&a proper subset of
/k?n'te?nd ?n/ /'pr?p? 's?bset/
intersection
/'?nt?sek??n/
/'ju:n??n/
/m?d/ /'m?dj?l?s/
degrees Centigrade
/d?'gri:z 'sent?gre?d/
degrees Fahrenheit
/d?'gri:z 'f&r?nha?t/
degrees Kelvin
/d?'gri:z 'kelv?n/
0&K, &273.15 &C
absolute zero
/abs?lu:t zi:r??/
millimetre
/'m?l?mi:t?/
centimetre
/'sent?mi:t?/
cc, cm³
cubic centimetre, centimetre cubed
'sent?mi:t?/&/'sent?mi:t?&'kju:bd/
/k?'l?m?t?/
/'m?l?gr&m/
/'k?l?gr&m/
x plus one
x minus one
& x multiplied by y
& y)(x + y)
minus y, x plus y
divided by y
5;& x is equal to 5
x is approximately equal to y
identical with y
x is not equal to y
is greater than y
is less than y
greater than or equal to y
x is less than or equal to y
zero is less
x is less than 1; x is greater than zero and less than 1
zero is less
than or equal to
x is less than or equal to 1; x is greater than or equal to zero and
less than or equal to 1
& x to the power
to the power n
to the power of minus n
&&the square
the cube root of x
the fourth root of x
the nth root of x
(x + y)²
x plus y all squared
(x/y)²
x over y all squared
factorial n
x is (directly) proportional to y
x is indirectly proportional to
x&double dot
the function of x
the (first) derivative of with respect to x
f double- the second derivative of f with
respect to x
f triple- f treble- the third derivative
of f with respect to x
the fourth derivative of f with respect to x
the partial derivative of v
delta v by delta theta, the partial derivative of v
with respect to &
delta two v by the second partial
derivative of v with respect to &
the derivative of v
d v by d theta, the derivative of v with respect to
d 2 v by d theta squared, the second derivative of v
with respect to theta,&
integral from zero to infinity
the sum from i equals 1 to n
with respect to
lo natural
log (of) y
gives, approaches
delta x approaches zero
the limit as delta x approaches zero,&the limit as delta x tends to zero
the limit as delta x approaches zero,&the limit as delta x tends to zero
metres per second
x belongs to A; x is a member of A; x is an element of A
x does not belong to A; x is not& a member of
A; x is not an element of A
A is contained in B; A is a proper subset of B
A is contained in B; A is a subset of B
A intersection B
tangent x, tan x
eighteen degrees Centigrade
seventy degrees Fahrenheit
Greek alphabet
/'epsil?n/
/'??m?kr?n/
/'j?ps?l?n/
Roman alphabet
/'d?blju:/
/? 'hɑ:f/
/? 'kw?:t?/
three quarters
/&ri: 'kw?:t?z/
two thirds
/tu: '&?:dz/
two fifths
/tu: 'f?f&s/
three fifths
/&ri: 'f?f&s/
four fifths
/f?: 'f?f&s/
/? 's?ks&/
five sixths
/fa?v 's?ks&s/
/?n 'e?t&/
three eighths
/&ri: 'e?t&s/
five eighths
/fa?v&'e?t&s/
seven eighths
/sev?n&'e?t&s/
Decimal Fractions
nought point one
/n?:t p??nt&w?n/
nought point oh one
/n?:t&p??nt ?? w?n/
nought point oh oh oh one
/ten p??nt ?? ?? ?? w?n/
one point one
/w?n&p??nt&w?n/
one point two
/w?n&p??nt tu:/
one point two three
/w?n&p??nt tu: &ri:/
one point oh one two three
/w?n&p??nt ?? w?n tu: &ri:/
ten point oh one
/ten p??nt ?? w?n/
twenty-one point five seven
/'twent? w?n&p??nt&
fa?v 'sev?n/
two point six recurring
/tu: p??nt &s?ks&r?'k?:r??/
two point six one two three recurring
/tu: p??nt &s?ks w?n
tu:&&ri: r?'k?:r??/
2.5 million
two point five million
/tu: p??nt&
fa?v&'m?lj?n/
SI Units: Prefixes
/'ma?kr??/
Cardinal Numbers
/&?:'ti:n/
/f?:'ti:n/
/f?f'ti:n/
/s?kst'i:n/
/seven'ti:n/
/na?n'ti:n/
twenty-one
/twent?'w?n/
twenty-two
/twent?'tu:/
twenty-three
/twent?'&ri:/
twenty-four
/twent?'f?:/
twenty-five
/twent?'fa?v/
twenty-six
/twent?'s?ks/
twenty-seven
/twent?'sev?n/
twenty-eight
/twent?'e?t/
twenty-nine
/twent?'na?n/
/'sev?nt?/
one hundred
/? 'h?ndr?d/ /w?n 'h?ndr?d/
a hundred and one
/? 'h?ndr?d ?n w?n/
a hundred and two
/? 'h?ndr?d ?n tu:/
a hundred and ten
/? 'h?ndr?d ?n ten/
a hundred and twenty
/? 'h?ndr?d ?n&'twent?/
two hundred
/tu: 'h?ndr?d/
three hundred
/&ri:& 'h?ndr?d/
four hundred
/f?: 'h?ndr?d/
five hundred
/fa?v 'h?ndr?d/
six hundred
/s?ks 'h?ndr?d/
seven hundred
/'sev?n 'h?ndr?d/
eight hundred
/e?t 'h?ndr?d/
nine hundred
/na?n 'h?ndr?d/
a thousand, one thousand
/? &'ɑ?z?nd/ /w?n '&ɑ?z?nd/
a thousand and one
/? '&ɑ?z?nd ?n w?n/
a thousand and ten
/? '&ɑ?z?nd ?n ten/
a thousand and twenty
/? '&ɑ?z?nd&?n&'twent?/
one thousand, one hunded
/w?n '&ɑ?z?nd&w?n 'h?ndr?d/
one thousand, one hundred and one
/w?n '&ɑ?z?nd&w?n 'h?ndr?d ?n w?n/
one thousand, one hundred and ten
/w?n '&ɑ?z?nd&w?n 'h?ndr?d ?n ten/
nine thousand, nine hundred and ninety-nine
/na?n '&ɑ?z?nd&na?n 'h?ndr?d
?n&'na?nt? 'na?n/
ten thousand
/ten '&ɑ?z?nd/
fifteen thousand, three hundred and fifty six
/'f?fti:n '&ɑ?z?nd&&ri:
'h?ndr?d ?n 'f?ft? s?ks/
a hundred thousand
/? 'h?ndr?d '&ɑ?z?nd/
/? 'm?lj?n/
100 000 000
a hundred million
/? 'h?ndr?d 'm?lj?n/
1 000 000 000
/? 'b?lj?n/
100 000 000 000
a hundred billion
/? 'h?ndr?d 'b?lj?n/
1 000 000 000 000
a trillion
/? 'tr?lj?n/
1 000 000 000 000 000
a quadrillion
/? kw?dr?lj?n/
1 000 000 000 000 000 000
a quintillian
/? kw?n't?lj?n/
1 000 000 000 000 000 000 000
a sextillion
/? seks't?lj?n/
1 000 000 000 000 000 000 000 000
a septillion
/? sep't?lj?n/
1 000 000 000 000 000 000 000 000 000
an ocillion
/?n ?kt't?lj?n/
1 000 000 000 000 000 000 000 000 000 000
a nonillion
/? n?n'?lj?n/
1 000 000 000 000 000 000 000 000 000 000 000
a decillion
/? de's?lj?n/
Ordinal Numbers
/?'lev?n&/
thirteenth
/&?:'ti:n&/
fourtheenth
/f?:'ti:n&/
/f?f'ti:n&/&&&
/s?ks'ti:n&/
seventeenth
/seven'ti:n&/
eighteenth
/e?'ti:n&/
nineteenth
/na?n'ti:n&/
/'twent??&/
twenty-first
/twent?'f?:st/
twenty-second
/twent?'sek?nd/
twenty-third
/twent?'&?:d/
twenty-fourth
/twent?'f?:&/
twenty-fifth
/twent?'f?f&/
twenty-sixth
/twent?'s?ks&/
twenty-seventh
/twent?'sev?n&/
twenty-eighth
/twent?'e?t&/
twenty-ninth
/twent?'na?n&/
/'&?:t??&/
thirty-first
/&?:t?'f?:st/
/'f?:t??&/
/'f?ft??&/
/'h?ndr?d&/
thousandth
/'&ɑ?z?nd&/
1 000 000th
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