i - noun

a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)

the smallest whole number or a numeral representing this number

the 9th letter of the Roman alphabet

i - adjective

• used of a single unit or thing; not two or more

i - thesaurus

ace   ane   iodin   iodine   one   single   unity