Quenya 

taima

noun. extension

An element meaning “extension” in the term ómataima “vocalic extension” from both versions of Tengwesta Qenderinwa from the 1930s (TQ1: PE18/34) and around 1950 (TQ2: PE18/86), as well as other linguistic notes from the 1960s (VT42/24-25). Sometimes Tolkien used an alternate form ómataina for “vocalic extension” (PE22/137; WJ/371, 417), but I think the final element in this variation is a nominalized form of the adjective taina “stretched, elongated”. The noun taima seems to be a combination of √TAY “stretch” with the instrumentation suffix ✶-mā, so I would use this noun with the sense “extension = an extended thing”, as opposed to Q. tailë for the process of extension.

Quenya [PE18/086; WJ/417] Group: Eldamo. Published by

taima

lengthening, extension

#taima noun "lengthening, extension" in ómataima, q.v.

taima#

noun. extension

extension

Quenya [PE 18:34] Group: Mellonath Daeron. Published by

taina

noun. extension

tailë

lengthening, extension

tailë noun "lengthening, extension" (TAY)

taile#

noun. lengthening

lengthening

Quenya [PE 18:45] Group: Mellonath Daeron. Published by

tailë

noun. lengthening, lengthening, [ᴹQ.] extension

A noun for “lengthening, extension” from The Etymologies of the 1930s under the root ᴹ√TAY “extend, make long(er)” (Ety/TAY), also appearing as an element in ómatailë “vowel lengthening” from both versions of Tengwesta Qenderinwa from the 1930s (TQ1: PE18/45) and around 1950 (TQ2: PE18/95).