| A | B |
|---|
| sphere | ball |
| ortho | straight, correct |
| nom | name |
| graph | write, writing, chart |
| patri | father |
| ectomy | to cut out, surgical removal |
| hemisphere | half a sphere bounded by a great cirdle; half, as divided by a meridian; either the North or South half of the Earth as divided by the equator |
| atmosphere | gaseous mass or envelope surrounding the Earth and retained by the body's gravitational field |
| spheriod | an object shaped like a sphere; round; globular; relating to or dealing with a sphere or its properties |
| spherical | shaped like a sphere; round; globular; relating to or dealing with a sphere or its properties |
| bathysphere | reinforced, spherical deep-diving chamber, manned and lowered by cable in the ocean |
| appendectomy | operation or surgical removal of the appendix |
| tonsillectomy | surgical removal of the tonsils |
| patriotism | love of one's country; defense of one's country |
| paternity | fatherhood; fact or condition of being a father |
| patriarch | paternal leader of a family or tribe |
| patricide | killing of one's father |
| orthodontia | dental specialty and practice of correcting abnormally aligned or positioned teeth |
| orthography | correct spelling, study and formulation of systems of spelling |
| orthopedic | surgical treatment of disorders of skeletal system and associated motor organs |
| orthodox | conforming to the usual beliefs or established doctrines, as in religion, politics, etc. |
| nominate | to propose as a candidate, as for elections; to designate or appoint to an office, responsibility, or honor |
| denominator | the quantity below the line of a fraction, indicating the number of units into which a whole is divided; a common trait or characteristic |
| nom de plume | a pseudonym adopted by a writer |
| nominal | existing in name only and not actuality; insignificantly small, trifling: (a nominal fee) |
