'Fortieth' definitions:
Definition of 'fortieth'
From: WordNet
adjective
The ordinal number of forty in counting order [syn: fortieth, 40th]
noun
Position 40 in a countable series of things
Definition of 'Fortieth'
From: GCIDE
- Fortieth \For"ti*eth\, n. One of forty equal parts into which one whole is divided; the quotient of a unit divided by forty; one next in order after the thirty-ninth. [1913 Webster]
Definition of 'Fortieth'
From: GCIDE
- Fortieth \For"ti*eth\, a. [AS. fe['o]wertigo?a. See Forty.]
- 1. Following the thirty-ninth, or preceded by thirty-nine units, things, or parts. [1913 Webster]
- 2. Constituting one of forty equal parts into which anything is divided. [1913 Webster]