4th has definitions from the field of geology
1
[ adjective ] (geology) coming next after the third and just before the fifth in position or time or degree or magnitude

Synonyms

fourth quaternary

Examples

"the quaternary period of geologic time extends from the end of the tertiary period to the present"

Used in print

(L. Don Leet and Florence J. Leet, editors, The World of...)

On November 4 , 1952 , an earthquake occurred under the sea off the Kamchatka_Peninsula .

(Your Federal Income Tax. 1962 Edition (Revised to...)

If you use a fiscal_year , a year ending on the last day of any month other_than December , your return is_due on or before the 15_th day of the 4_th month after the close of your tax year .

If a taxpayer dies , the executor , administrator , or legal representative must file the final return for the decedent on or before the 15_th day of the 4_th month following the close of the deceased taxpayer 's normal tax year .

Returns of estates or trusts are_due on or before the 15_th day of the 4_th month after the close of the tax year .

Related terms

ordinal

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