quadrillionth
One over quadrillion
Quadrillionth describes the ordinal position in a sequence of one quadrillion items, or designates one part when something is divided into a quadrillion equal portions.
A quadrillion is a one followed by fifteen zeros in American usage, or twenty-four zeros in the older British system.
The word appears mainly in scientific contexts discussing infinitesimally small quantities: a quadrillionth of a second.
As with other extreme ordinals, it occasionally serves hyperbolic purposes to emphasize tedious repetition: For the quadrillionth time, clean your room.
One part per quintillion
- trillionthDivided by twelve zeros
- billionthOne part per billion
- millionthOne part per million
- thousandthOrdinal for 1000
hundredth · tenth · numerator · denominator · divisor · ratio · proportion · fragment
One quadrillionth liter
- picocurieRadioactivity measurement unit
- attosecondQuintillionth of a second
- femtosecondQuadrillionth of a second
- picosecondTrillionth of a second
Overstating beyond reality
- overstatementClaim beyond the facts
- infinitesimalQuantity approaching zero
- negligibleToo small to consider
- speckMinute visible particle
iota · whit · trace · shred · smidgen · minuscule · imperceptible · insignificant
Billionth-meter dimension
- subatomicSmaller than atoms
- molecularOf tiny particles
- quantumSmallest discrete unit
- microscopicToo small for eyes
angstrom · nanometer · picometer · femtometer · particle · quark · neutrino · electron
Ordered succession of elements
- rankingOrdered position assignment
- positionLocation or stance
- orderMethodical arrangement or request
- placementPutting somewhere specific
numbering · enumeration · progression · series · succession · index · notation · exponent
quintillionth
One part per quintillion
- trillionthDivided by twelve zeros
- billionthOne part per billion
- millionthOne part per million
thousandth · hundredth · tenth · numerator · denominator · divisor · ratio · proportion · fragment · sliver
femtoliter
One quadrillionth liter
- picocurieRadioactivity measurement unit
- attosecondQuintillionth of a second
- femtosecondQuadrillionth of a second
exaggeration
Overstating beyond reality
- overstatementClaim beyond the facts
- infinitesimalQuantity approaching zero
- negligibleToo small to consider
speck · iota · whit · trace · shred · smidgen · minuscule · imperceptible · insignificant · trifling
nanoscale
Billionth-meter dimension
microscopic · angstrom · nanometer · picometer · femtometer · particle · quark · neutrino · electron · photon
sequence
Ordered succession of elements
placement · numbering · enumeration · progression · series · succession · index · notation · exponent · nomenclature
quadrillionthquadrillion
Ten to the fifteenth
googolplex · infinity · whole · trillion · googol
quadrillionthcardinal
Of foremost importance
one · first · whole number · integer · countable
quadrillionthcardinal
Of foremost importance
quadrillion · one · two · three