precover
English edit
Etymology 1 edit
Noun edit
precover (plural precovers)
- (mathematics) A generalization of a cover in which the kernal may contain a non-zero pure subgroup.
- Something that occurs in preparation for a covering.
- 1957, Canada Dept. of Agriculture Research Station, Kentville, N. S., Research Report, page 19:
- Zineb did not give good control as a precover spray but as a cover spray it gave excellent control of late and storage scab.
- 1959, Annual Report of the Canadian Plant Disease Survey:
- Excellent control of a storage rot of apples, caused by Gloeosporium album, was obtained with an orchard spraying program of captan in the precover followed by 3 regular and 2 late cover sprays of captan or a mixture of captan and zineb.
- 2001, Oregon Administrative Rules - Volume 6, page 11:
- At the discretion of the Agent, the permittee may be assessed a reinspection fee, not to exceed $235, when a precover inspection correction notice requires correction of improper construction and, at a subsequent inspection, the Agent finds system construction deficiencies have not been corrected.
Etymology 2 edit
Verb edit
precover (third-person singular simple present precovers, present participle precovering, simple past and past participle precovered)
- (astronomy) To find an older image of an object in archived images after it has been discovered.