Para... - Parallel, Paragraph, Parasite, Parameter, Paralysis.

Parallel. From Ancient Greek παράλληλος, from παρά, para, beside + ἄλληλος, allelos, along each other. Equally distant from one another at all points.

Paragraph. From Ancient Greek παράγραφος from παρά, para, beside + γράφω, grapho, I write.

Parasite. From Ancient Greek παράσιτος, parasitos, person who eats at the table of another, from noun use of adjective meaning feeding beside, from παρά, para, beside + σῖτος, sitos, food.

 

Parameter. From Ancient Greek παράμετρος, parametros, from παρά, para, beside + μέτρον, measure. A variable kept constant during an experiment, calculation or similar.

 Paralysis. From Ancient Greek παράλυσις, paralusis, palsy, from παραλύειν, paraluein, to disable on one side, from παρά, para, beside + λύειν, luein, loosen. The complete loss of voluntary control of part of person's body, such as one or more limbs.