| A | B |
|---|
| geneology | literally, "account of a race or family"; history of the descent of a person or family from an ancestor; lineage; pedigree |
| genesis | birth or coming into being of something; origin |
| heterogeneous | differing in kind; dissimilar; not uniform; varied |
| homogeneous | of the same kind; similar; uniform |
| homogenize | make homogeneous |
| barometer | instrument for measuring atmospheric pressure as an aid in determining probable weather changes |
| chronometer | instrument for measuring time very accurately |
| diameter | literally, "measure across"; straight line passing through the center of a body or figure from one side to the other; length of such a line; thickness; width |
| meter | device for measuring |
| odometer | instrument attached to a vehicle for measuring the distance traversed |
| photometer | instrument for measuring intensity of light |
| speedometer | instrument for measuring speed; tachometer |
| symmetry | correspondence in measurements, shape, etc., on opposite sides of a dividing line; well-balanced arrangement of parts; harmony; balance |
| orthodontist | dentist dealing with the straightening and adjusting of teeth |
| orthodox | literally, "correct opinion"; generally accepted, especially in religion; conventional; approved; conservative |
| orthography | literally, "correct writing"; correct spelling |
| orthopedist | physician dealing in the correction and prevention of deformities, especially in children |
| unorthodox | not in accord with accepted, standar, or approved belief or practice; unconventional; heretical |
| encyclopedia | literally, "well-rounded rearing of a child"; work offering alphabetically arranged information on various branches of knowledge |
| orthopedic | literally, "of the straight child"; having to do with the science dealing with the correction and prevention of deformities; especially in children |
| padagogue | literally, "leader of a child"; teacher of children |
| padagogy | art of teaching |
| pediatrician | physician specializing in the treatment of babies and children |
| pediatrics | branch of medicine dealing with the care, development, and diseases of babies and children |
