My Little Notebook

SEMI- half (L-Pr)
semi/annu/al (a) taking place twice a year, or every six months; biannual
semi/circ/le (n) the half of a circle; 180 degrees; compare quadrant, sextant, and octant
semi/preci/ous (a) naming gems which are not ranked with those of the highest value; as, garnets, jade, etc., are semiprecious stones

SEPT, SEPTEM, SEPTI, SEPTU seven, a seventh part; seven times (L-R)
sept/ang/ular (a) having seven angles or corners, as does a heptagon
Septem/ber (n) the ninth month of the Gregorian calendar (Pope Gregory), and the seventh month of the Julian calendar (Julius Caesar)
septi/lateral (a) having seven sides, or being seven-sided, as is a heptagon
septillion (n) the number named by a unit with twenty-four zeros after it; 1000 sextillions; 1,000,000,000,000,000,000,000,000

SEX, SEXT, SEXTU six; a sixth part; six times (L-R)
sex/ang/ular (a) having sex angles or corners, as does a hexagon
sext/ant (n) a sixth part; the sixth of a circle; an instrument used for measuring angular distances
sextillion (n) the number named by a unit with twenty-one zeros after it; 1000 quintillions; 1,000,000,000,000,000,000,000

SON sound (L-R)
son/ic (a) of or pertaining to sound waves; as, sonic booms, waves, etc.
sub/son/ic (a) showing a speed below that of the speed of sound in air (738 miles per hour at sea level); opposite of supersonic or ultrasonic
tran/son/ic (a) showing a speed of approximately that of sound in air (738 miles per hour at sea level); it is at this speed that the phenomena called a sonic boom takes place

SPIR, SPIRE, PIR, PIRE to breathe; breath (L-R)
re/spir/ation (n) the act or process of breathing again
con/spire (v) to plot or unite against; literally, to breathe together as in some cause; as, to conspire to overthrow a dictatorship
in/spire (v) to breathe into or upon; as, to inspire others through example
per/spire (v) to breathe out through the pores of the skin; to sweat
tran/spire (v) to become known; as, what was discussed during their talk, never transpired; to perspire; as, sweat transpires through pores
ex/pir/ation (n) the act of breathing out; the last breath; the end of; death; as, the expiration of a contract, a license, a friend, etc.
ex/pire (v) to breathe out; to come to an end; to die; as, the license expired last week; or, he expired last month