Timely Words

Time is important to all of us; some have too much, others too little, some waste their time; others use every second. However, one thing is certain: one day time will run out for everyone. If you can spare the time, take a look at the following list of words containing the combining form chron- or chrono-, meaning 'relating to time', from the greek word for time khronos.

achronism	Timelessness or lack of time
algesichronometer	An instrument for recording the time required for the perception of a painful stimulus
allochronic	Not occurring or existing at the same time or having the same period or phase
anachronic	Wrong in date, characterised by anachronism
anachronism	1 The assigning of an event, custom or circumstance to a wrong period or date - 2 Anything out of date or incongruous with the present
anachronistic	Of, relating to or involving an anachronism
asynchronous	Nor existing or occurring at the same time
catachronobiology	The study of the deleterious effects of time on a living system
chron	The smallest subdivision of geologic time
chronal	Of or relating to time
chronaxia	Synonym of chronaxie
chronaxie	The minimum interval of time necessary to electrically stimulate a muscle or nerve fibre, using twice the minimum current needed to elicit a threshold response
chronaximeter	An instrument for measuring chronaxie
chronaximetry	The measurement of chronaxie
chronaxis	Synonym of chronaxie
chronaxy	Synonym of chronaxie
chronic	1 (Of a disease, social problem, etc.) of long duration, or apt to recur - 2.(coll.) habitual - 3.(coll.) very bad, severe
chronicity	Characterised by long duration; the state of being chronic
chronicle	1 A register or history of events in order of time - 2 a history, a record - 3 A narrative account
Chronicles	The name of two books of the Bible, recording the history of Israel and Judah until the return from Exile
chronobiology	The branch of biology concerned with cyclical physiological phenomena
chronocline	Gradual change in one lineage over time
chronocyclegraph	A chart for examining fine details of movement over time, such as the hand movements of an assembly worker
chronogenesis	1 The time sequence of occurrences of organisms in stratified rock - 2 The history of the development of a group of organisms
chronognosis	The subjective realisation of the passage of time
chronogram	1 A date given by taking the letters of an inscription which coincide with Roman numerals and printing them larger than the rest - 2 The record produced by a chronograph
chronograph	1 An instrument for measuring and registering very small intervals of time with great precision - 2 A stopwatch
chronography	A description of past events
chronological	1 In order of occurrence in time - 2 Of or relating to chronology
chronology	1 The study of historical records etc. in order to determine the sequence of past events - 2 An arrangement of dates of historical events - 3 A tabular list of dates
chronomancy	The divination of the best time to do something, determination of lucky and unlucky days, especially popular in ancient China
chronometer	1 An instrument that measures time with great precision, especially one used in navigation at sea - 2 Any instrument that measures time, such as a sundial, clock or watch
chronometry	The science of accurate time measurement
chronooncology	1 The study of the influence of biological rhythms on neoplastic growth - 2 Anticancer treatment based on the timing of drug administration
chronopharmacology	The study of rhythmic, predictable-in-time differences in the effects and/or pharmacokinetics of drugs both in experimental animals and in men
chronopher	A contact maker for transmitting time signals
chronophilia	Sexual attraction to a partner of significantly different age
chronophobia	A morbid or neurotic fear of the duration or immensity of time
chronophotography	The taking of a set of photographs of a moving object at regular intervals
chronoscope	1 An instrument for measuring very small intervals of time - 2 A chronometer in which figures are seen through apertures in a dial
chronosemic	Employing intervals of time with a fixed significance (as in a system of signalling) by exposing visual objects or sounding audible signals for selected intervals of time
chronospecies	A species which is reproductively isolated from its relatives by existing in a different time period
chronostichon	A chronogrammatic line of verse
chronostratigraphy	The branch of geology concerned with establishing the absolute ages of strata
chronotaraxis	Distortion or confusion of the sense of time
chronotherapy	The treatment of an illness or disorder by administering a drug at a time of day believed to be in harmony with the body's natural rhythms
chronothermal	Relating to time and temperature
chronothermometer	A chronometer whose rate is altered by temperature changes
chronotropic	Affecting the rate of rhythmic movements such as the heartbeat
chronotropism	The modification of the rate of a periodic movement, such as the heartbeat, through some external influence
dendrochronology	The science of dating events by the comparative study of the annual growth rings in timber and tree trunks
desynchronise	Disturb the synchronisation of; put out of step or phase
diachronic	Concerned with the way in which something, especially language, has developed and evolved through time
diachronism	The occurrence of a feature or phenomenon in different geological periods
dischronation	A disturbance in the consciousness of time
dyschronous	Not synchronous
gastrochronorrhea	Excessive continuous gastric secretion
geochronology	The branch of geology concerned with the dating of rock formations and geological events
geochronometric	Relating to geochronological measurement
geosynchronous	1 Of, relating to, or being an orbit that has a period of one sidereal day- 2 Geostationary
glottochronology	The use of statistical data to date the divergence of languages from their common sources
heterochronic	(In biology) occurring at different times or intermittently
homochronous	Something which occurs at the same age in related individuals from succeeding generations
isochron	A line on a diagram or map connecting points relating to the same time or equal times
isochronia	1 The state of having the same chronaxie - 2 Agreement, with respect to time, rate, or frequency, among processes
isochronous	Occurring at the same time
metachronism	An error committed in chronology by placing an event after its real time
monochronic	Existing at the same time; contemporaneous
myochronoscope	An instrument for timing a muscular impulse, i.e., the interval between the application of the stimulus and the muscular movement in response
panchronic	Pertaining to or designating linguistic study applied to all languages at all stages of their development
parachronism	An error in chronology, especially by assigning too late a date
parachronology	1 Practical dating and correlation of stratigraphic units - 2 Geochronology based on fossils that supplement, or replace, biostratigraphically significant fossils
photochronograph	1 (Physics) An instrument for recording minute intervals of time using a series of photographs - 2 (Astron.) An instrument for the photographic recording of star transits
plastochrone	Time interval between forming next leaves in a plant
prochronism	The error of assigning to an event a date before its real date
pseudochronism	A false dating, an error in date
synchrocyclotron	A cyclotron able to achieve higher energies by decreasing the frequency of the accelerating electric field as the particles increase in energy and mass
synchromesh	A gear shift system in which the gears are synchronised at the same speeds before engaging to effect a smoothe change
synchronal	Synchronous
synchronic	Concerned with something, especially a language, as it exists at one point in time
synchronicity	1 The simultaneous occurrence of events which appear significantly related but have no discenible causal connection- 2 Synchrony
synchronism	Synchrony
synchronise	Cause to occur or operate at the same time or rate
synchronology	Contemporaneous chronology
synchronous	1 Existing or occurring at the same time - 2 (Astron.) Making or denoting an orbit around the earth or another celestial body in which one one revolution is completed in the period taken for the body to rotate about its axis
synchrony	1 Simultaneous action, development or occurrence - 2 Synchronic treatment or study
synchrotron	A cyclotron in which the magnetic field strength increases with the energy of the particles to keep their orbital radius constant
tautochrone	A curve on which an object falling under gravity will reach the bottom in the same amount of time, no matter from where it starts
tautochronous	Occupying the same time; pertaining to, or having the properties of, a tautochrone
tephrochronology	The study of tephra deposits to determine their age relationships