Word Unit: pan- (Latin: panis, bread)
Word Unit: pan-, panto-, pant- (Greek: all, every, entire; always)

Related "all, every" word unit: omni-.

Word Unit: pancre-, pancreo-, pancreat-, pancreato-, pancreatic-, pancreatico- (Greek: pancreas [pan, "all" plus kreas, "flesh"; the idea apparently being that the pancreas is an organ composed entirely of glandular flesh])
Word Unit: pand-, pans-, pass- (Latin: stretch, stretching; spread, spreading)
Word Unit: papaver- + (Latin: poppy; used in extended senses to mean "pertaining to, containing, or derived from opium")
Word Unit: papillo-, papill-, papilli- + (Latin: nipple; nipple-shaped elevation or growth)
Word Unit: papulo-, papul-, papuli- + (Latin: pimple, pustule)

Cross references directly, or indirectly, involving the "skin": callus-; chorio-; cicatri- (scar); cori-; cuti-; hymen-; lepido- (scab, scale); psoro- (itch, mange); pustu- (blister, pimple); rhytid- (wrinkle); scabio- (mange, itchy); sebo- (grease, oil).

Cross references of word groups that are related, partially or extensively, to: "blister, bump, swelling": bull-; ichor-; pemphig-; puro-; pus-; pustu-; pyo-; suppurant-; tum-; vesico-; vesiculo-.

Word Unit: papyro-, papyr- (Greek: papyros > Latin > Old French; papyrus, an Egyptian rush [a reed plant] from which material was made for writing or drawing. Used in the sense of "fibrous material on which to write or to draw"; paper)
Word Unit: par-, para- (Latin: to make ready, to get ready, to put in order; to furnish, to prepare)
Word Unit: para-, par- (Greek: by the side of, beside, past, beyond; contrary, wrong, irregular, abnormal)
Word Unit: para-, par-, -parous, -partum (Greek > Latin: to bring forth, to bear; producing viable offspring; giving birth to; brood; secreting)
Word Unit: paraprosdokian, paraprosdokia (Greek: beyond expectations; surprise endings; a pun which is fun)
Word Unit: pare-, pari-, pear- (Latin: to come forth, to be visible, to come in sight)

Cross references of word families that are related directly, or indirectly, to: "appear, visible, visual, manifest, show, see, reveal, look": blep-; delo-; demonstra-; opt-; -orama; phanero-; phant-; pheno-; scopo-; spec-; vela-, veal-; video-, visuo-.

Word Unit: pari-, par- (Greek: same, equal, equality, equal value)

Inter-related cross references, directly or indirectly, involving word units dealing with "equal, identical, same, similar": auto-; emul-; equ-, equi-; homeo-; homo-; iso-; peer; rhomb-; syn-; tauto-.

Word Unit: parieto-, pariet- + (Latin: wall [of a house], walls; used in the extended sense of "the walls of a cavity or organ of the body")

A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract, tube": alveolo-; antro-; anu-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; meato-; ora-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; uretero-; urethro-; vagino-; ventricul-.

Word Unit: part-, parti- (Latin: part, parts, to divide)
Word Unit: partheno-, partho- (Greek: virgin, maiden, young girl)
Word Unit: parvo-, parvi- + (Latin: [parvus] small, little; minute, minuscule)
Word Unit: pass-, pace- (Latin: step, stepping)
Word Unit: pass-, pati- (Latin: suffering, feeling; enduring)

Related-word units meaning feeling: aesth-; senso-; patho-.