Attributive use of the noun before another noun.
Definitions
Used before another noun to denote a phase or process of judgment or calculation. The team entered the reckoning phase of the project.
reckoninggerund / present participle Functions as the present participle of ‘reckon’, modifying nouns (e.g., ‘reckoning method’).
Definitions
Calculating or estimating; taking something into account. The reckoning algorithm produced accurate results.