Anagrams of THIRTEENTHLY_

• a musical stringed instrument with strings stretched over a flat sounding board; it is laid flat and played with a plectrum and with fingers

• the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected

• with that or this or it

• a musical stringed instrument with strings stretched over a flat sounding board; it is laid flat and played with a plectrum and with fingers

• Any of many isomeric univalent hydrocarbon radicals, C6H13, formally derived from hexane by the loss of a hydrogen atom

• the basic rhythmic unit in a piece of music

• recurring at regular intervals

• an interval during which a recurring sequence of events occurs

• the arrangement of spoken words alternating stressed and unstressed elements

• natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)

• (architecture) the repetitive use of a group of visual elements to establish a recognizable pattern

• characterized by jerky movements

• being in a tense state

• German physicist who was the first to produce electromagnetic waves artificially (1857-1894)

• the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)

• German physicist who with James Franck proved the existence of the stationary energy states postulated by Bohr (1887-1975)