zenithzen‧ith /ˈzenəθ $ ˈziː-/ noun [countable usually singular] 
The Roman Empire reached its zenith around the year 100.2technical the highest point that is reached by the Sun or the Moon in the skyRegisterZenith sounds rather literary. In everyday English, people usually say peak:· Her career was at its peak.
WORD ORIGINzenith
Origin:
1300-1400 Old French cenith, from Arabic samt (ar-ra's) ‘path (above the head)’EXAMPLES FROM OTHER DICTIONARIES
- Wilson's career reached its zenith in 1978.
- Couture, that zenith of craft, detail and construction, comes closest to approximating art in the most traditional sense.
- Even at the zenith of my passion for Carolyn, I gave no thought to leaving.
- I sat watching as the sun reached its zenith and the muezzin began to call the people to prayers.
- It is with the porcupines, however, that the spiny defensive system reaches its zenith.
- It reached its zenith Dec. 13, when the Dow industrials closed at 5216. 47.
- The Sun can't be past, or not past, the zenith on the Sun.
- When it had almost reached its zenith, the second rod also moved, so that the motion of the wheel was continued.
WORD SETS
asteroid, nounastro-, prefixastronaut, nounastronomical, adjectiveastronomy, nounastrophysics, nounAU, aurora borealis, nounBig Bang, the, nounblack hole, nouncelestial, adjectivecomet, nounconstellation, nouncorona, nouncosmic, adjectivecosmic ray, nouncosmology, nouncosmonaut, noundead, adjectiveearth, nouneclipse, nouneclipse, verbecliptic, nounequinox, nounescape velocity, nounextraterrestrial, adjectivegalactic, adjectivegalaxy, noungeostationary orbit, nounHubble Space Telescope, the, infinity, nounintergalactic, adjectiveinterplanetary, adjectiveinterstellar, adjectiveJupiter, nounlaunch, verblaunch, nounlight year, nounLittle Bear, lunar, adjectivelunar month, nounmagnitude, nounMars, nounMercury, nounmeteor, nounmeteoric, adjectivemeteorite, nounMilky Way, the, month, nounmoon, nounmorning star, nounNASA, nounnebula, nounNeptune, nounnew moon, nounnova, nounobservatory, nounorbit, verborbit, nounorbiter, nounouter space, nounphase, nounplanet, nounplanetarium, nounplasma, nounPluto, nounquadrant, nounquarter, nounquasar, nounradio telescope, nounring, nounrocket, nounsatellite, nounSaturn, nounsea, nounshooting star, nounsolar, adjectivesolar system, nounspace, nounspace capsule, nounspacecraft, nounspace probe, nounspaceship, nounspace shuttle, nounspace station, nounstar, nounstargazer, nounsteady state theory, nounstellar, adjectivesun, nounsunspot, nounsupernova, nountelescope, nountelescopic, adjectiveterrestrial, adjectiveUranus, nounVenus, nounwane, verbwax, verbwhite dwarf, nounworld, nounzenith, noun
COLLOCATIONS FROM THE ENTRY The Roman Empire reached its zenith around the year 100.COLLOCATIONS FROM THE CORPUSVERB
1the most successful point in the development of something SYN peak OPP nadirreach its zenith/be at its zenith The Roman Empire reached its zenith around the year 100.· When it had almost reached its zenith, the second rod also moved, so that the motion of the wheel was continued.· It reached its zenith Dec. 13, when the Dow industrials closed at 5216. 47.· It is with the porcupines, however, that the spiny defensive system reaches its zenith.· Once it reaches its zenith you can neither see, hear nor stand.
The Roman Empire reached its zenith around the year 100.2technical the highest point that is reached by the Sun or the Moon in the skyRegisterZenith sounds rather literary. In everyday English, people usually say peak:· Her career was at its peak.