Hack·en·sack River 
(hăkən-săk′)
(hăkən-săk′) A river rising in southeast New York and flowing about 50 km (32 mi) south through the New Jersey Meadowlands to Newark Bay.
- participation
- participational
- participative
- participator
- participatory
- participial
- participially
- participle
- particle
- particle accelerator
- particle beam
- particleboard
- particle board
- particle decay
- particle physics
- parti-colored
- particular
- particularism
- particularist
- particularistic
- particularity
- particularization
- particularize
- particularizer
- particularly