hard seeds
Defined in 1 dictionary — U.S. Code
United States Code
7 U.S.C. § 1561 — for the purposes of this chapter (2 versions over time)
The term “hard seeds” means the percentage of seeds which because of hardness or impermeability do not absorb moisture or germinate under prescribed tests but remain hard during the period prescribed for germination of the kind of seed concerned, determined by methods prescribed under section 1593 of this title.