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1st

1st is the common written form of the ordinal indicator for the number one, used to denote position or order. It is typically written with the numeral and the suffix -st, as in 1st, and is often spoken as “first.” The ordinary word form is first.

Usage and contexts

The 1st is used in a variety of contexts to indicate ranking or sequence. In dates, for

Notation and spelling

The ordinal suffix system in English generally uses -st for numbers ending in 1 (with the exceptions

Etymology and notes

The word first derives from Old English fyrst, meaning foremost; the modern form reflects historical development

example,
one
might
say
the
1st
of
January.
In
lists
or
instructions,
items
are
numbered
1st,
2nd,
3rd,
and
so
on.
In
competitions
and
rankings,
a
participant
or
team
may
finish
in
1st
place.
The
phrase
appears
in
versions
or
editions,
such
as
the
1st
edition
of
a
book
or
the
1st
draft
of
a
document.
In
law
and
governance,
ordinal
forms
are
common,
as
in
the
1st
Amendment
to
the
U.S.
Constitution
or
a
1st
session
of
a
legislative
body.
11,
12,
and
13,
which
take
-th
as
in
11th,
12th,
13th).
Thus
21st,
31st
also
appear
in
writing,
while
11th,
12th,
and
13th
follow
the
regular
-th
pattern.
When
written
fully
as
a
word,
the
ordinal
is
first.
The
numeral
form
1st
is
widely
used
in
legal,
mathematical,
and
practical
contexts,
while
first
is
common
in
prose.
of
the
ordinal.
The
combination
of
a
numeral
with
the
-st
suffix
is
a
standard
convention
in
English
for
denoting
the
first
position.