Definition of Is-

1. Prefix. form of iso- before a vowel ¹

¹ Source: wiktionary.com

Medical Definition of Is-

1. 1. A prefix or combining form, indicating identity, or equality; the same numerical value; as in isopod, isomorphous, isochromatic. Specif. 2. Applied to compounds of certain isomeric series in whose structure one carbon atom, at least, is connected with three other carbon atoms; contrasted with neo- and normal; as in isoparaffine; isopentane. Origin: Gr. 'isos equal. (29 Oct 1998)

Lexicographical Neighbors of Is-

irrupt
irrupted
irrupting
irruption
irruptions
irruptive
irruptively
irrupts
irvingite
is
is't
is- (current term)
is-a
is-as
is-ought problem
is-to-be
is anyone sitting here
is it going to rain
is it just me
is that a gun in your pocket or are you just pleased to see me
is that so
is the Pope Catholic
is there a smaller size
isabel
isabella
isabella grape

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