Definify.com
Webster 1913 Edition
Is
Is
,Verb.
I.
[AS.
is
; akin to G. & Goth. ist
, L. est
, Gr. [GREEK], Skr. asti
. √9. Cf. Am
, Entity
, Essence
, Absent
.] The third person singular of the substantive verb be, in the indicative mood, present tense;
as, he
. See is
; he is
a manBe
. ☞ In some varieties of the Northern dialect of Old English, is was used for all persons of the singular.
For thy
is
I come, and eke Alain. Chaucer.
Aye
is
thou merry. Chaucer.
☞ The idiom of using the present for future events sure to happen is a relic of Old English in which the present and future had the same form; as, this year Christmas is on Friday.
Webster 1828 Edition
Is
IS
,Verb.
I.
iz.
are.