- parasitic element
- parasitic excitation
- parasitic inductance
- parasitic loss
- parasitic monster
- parasitic oscillation
- parasitic radiation
- parasitic reflector
- parasitic resistance
- parasitic source
- parasitic stopper
- parasitic suppressor
- parasitic transistor
- parasitical
- parasitically
- parasiticidal
- parasiticide
- parasitiferism
- parasitism
- parasitization
- parasitize
- parasitogenic
- parasitoid
- parasitologist
- parasitology
- parasitosis
- parasol
- parasol mushroom
- parasolette
- parasolpine
- parasoriasis
- paraspasm
- parastatal body
- parastate
- parasteatosis
- parasternal
- parastrophic matrix
- parasuit
- parasychology
- parasymbiosis
- parasympathetic
- parasynanche
- parasynapsis
- parasynthesis
- parasynthetic
- paratactic
- paratactic lines
- paratactic parallelism
- parataxis
- paratectonic
- paratenon
- paratereseomania
- parathesis
- parathion
- parathyroid
- parathyroid glands
- parathyroid hormone
- parathyroidectomy
- parathyropathy
- parathyrotoxicosis
- paratonia
- paratonic
- paratonnerre
- paratourism
- paratrachoma
- paratrooper
- paratroops
- paratuberculosis
- paratyphlitis
- paratyphoid
- paratyphoid fever
- paratypical
- paravane
- paravar
- paravariation
- paravariola
- paravascular
- paravenous
- paravertebral
- paravertebral anethesia
- paraxial
- paraxial optics
- paraxial pencil
- paraxial ray
- paraxial region
- paraxial trajectory
- paraxylene
- parboil
- parbuckle
- parcel
- parcel bomb
- parcel car
- parcel cargo
- parcel dispatch
- parcel express
- parcel forwarding
- parcel office
- parcel post
- parcel rates
- parcel receipt