holding tank

[ hohl-ding tangk ]

noun

1. a tank for the temporary storage of a substance.
2. Also called holding pen. tank ( def 5 ).

Word History and Origins

Origin of holding tank¹

First recorded in 1970–75

Example Sentences

This low-activity waste is pumped to a separate holding tank that then is pumped into another tank for mixing.

From Seattle Times

Without this important convenience, you’ll be stunned how fast you’ll fill up your onboard sewage holding tank.

From Seattle Times

Inspection reports said they found sanitization was not done at the Goa factory as per standard operating procedures, and records showed batches in question were kept for 21 days after manufacturing in a holding tank without mixing, "which may be the possible reason for contamination or growth of bacteria."

From Reuters

The only issue in the recovery occurred on May 21, when 300 to 600 gallons of pumped groundwater overflowed from a holding tank, officials said.

From Seattle Times

The Nebraska State Fire Marshal Agency said firefighters found a liquid holding tank that had been damaged in the explosion at the plant, which makes the highly flammable fuel additive.

From Seattle Times