Zip Code 94401 - San Mateo, CA. 94401 is located in the state of California in the San Francisco-Oakland-San Jose metro area.
Definition of participial. : of, relating to, or formed with or from a participle.
A participial phrase contains a participle, a verb based word  that's used as an adjective, and a modifier or a noun, or both. An  example of a participial phrase can be fouâ¦nd in the sentence: He  saw her working at the restaurant. The participial phrase is  working at the restaurant. 2 people found this useful.