An autochronograph is an instrument intended for the instantanteous self-recording of time.
Here is my list of words containing the word part -auto- but none of them end with it:autarchy n. (Gr. autarchia, absolute power. -auto-, self + -arch-, rule + -y, Qu, A, C) Unlimited power; unlimited sovereignty; autocracy. [Used to mean self-sufficient.]authentic adj. (Gr. authentikos, L. authenticus, coming from the real author. -auto-, self + -entea-, instruments, tools + -ic, L, N, Ch, made of) Genuine, not of doubtful origin.authenticity n. (authentic + -ity, Ch, C, S) Genuineness. The quality of being authentic.autobiography n. (-auto-, self + -bio-, life + -graph-, written + -y, Qu, A, C) A biography written by the subjectautocracy n. (-auto-, self + -cracy, rule) Supreme, uncontrolled, and unlimited authority. A country with this type of government.autocrat n. (-auto-, self + -crat-, rule) An absolute prince or sovereign; dictator, despot.automaton n. (Gr. automatos, -auto-, self + matenein, to strive to do) A mechanical device that mimics the movements of humans or animals.autonomous adj. (Gr. autonomia, independence. -auto-, self + -nom- manage, law + -ous, have, Ch, F) Independent in government. Having the right or power of self-government.autonomy n. (-auto-, self +-nomy, manage, law) The power or right of self-government. Any state that governs itself.autopsy n. (Gr. autopsia. a seeing with one's own eyes, -auto- self + -ops-, eyes, see + -y, Qu, A, C) Personal examination, seeing with one's own eyes. Medically: The post mortem dissection of a dead body to ascertain the cause of death.(autarky, autecoid, autecology, authotype, autism, autoantibody, autoantitoxin, autoasphyxiation, autoaudible, autocarp, autocatalysis, autocephalous, autochronograph, , autochthonal, autocide, autocinesis, autoclasia, autoclave, autodeme, autodermic, autodiagnosis, autodidactic, autodyne, autoecious, autoerotism, autofecundation, autogamous, autogenesis, autogenous, autogiro, autognosis, autograft, autograph, autohemolysis, autohemorrhage, autohemotherapy, autohypnosis, autoimmune, autoinfection, autoinnoculation, autointoxicant, autokinesis, autolatry, autologous, autology, autoluminescence, autolysin, autolysis, automat, automatic, automation, automnesia, automobile, automysophobia, autonarcosis, autonephrectomy, autonetics, autonym, autonymous, autopathography, autophagia, autophile, autophobia, autophony, autophyllogeny, autophyte, autoplasty, autopotamic, autopsychosis, autopsychotherapy, autoradiograph, autosite, autosome, autosomatognosis, autostylic, autosuggestion, autotemnous, autotheism, autotherapy, autotomy, autotopagnosia, autotoxemia, autotoxic, autotoxicosis, autotoxin, autotrophic, autotropism, autotype, autoxenous, autoxidation, autozooid, chemoautotrophic, dermatoautoplasty, photoautotropic, semiautomatic, semiautonomous)
hieroglyph, lithograph, auxotroph, sph, optigraph, idiograph, spectrograph, chorograph, seminymph, dimorph, lymph, staph, radiophotograph, pictograph, tetramorph, echocardiograph, macrograph, glyph, odograph, mechanograph, troph, galumph, aleph, hydrometrograph, autoradiograph, photograph, sonograph, digraph, nomograph, epitaph, ondograph, radiotelegraph, apograph, barometrograph, echoencephalograph, bolograph, actinograph, humph, multigraph, delph, microphotograph, autotroph, paleograph, monograph, anagraph, marigraph, melodiograph, phosph, magnetograph, chirograph, biograph, heterotroph, allomorph, triglyph, ph, electrograph, cardiograph, paranymph, perigraph, biotroph, skiagraph, cph, morph, chemotroph, chronograph, amph, polygraph, myocardiograph, lagomorph, stenograph, trigraph, tph, rotograph, meteorograph, barograph, qoph, rudolph, mesomorph, psychograph, photoheliograph, kmph, noematachograph, homograph, phonocardiograph, logograph, soph, choreograph, microbarograph, heliograph, rhizomorph, allograph, endomorph, sismograph, bibliotaph, sylph, oscillograph, gynandromorph, harrumph, hemolymph, karyolymph, autograph, mph, pph, thermograph, subgraph, electrocardiograph, pneumograph, pseudomorph, microradiograph, anemograph, hectograph, perspectograph, oncograph, nph, perimorph, hodograph, podoscaph, solenoglyph, seriph, asaph, sumph, ellipsograph, telautograph, helicograph, stethograph, cymograph, odontograph, acaleph, diagraph, gonoph, orograph, monotriglyph, hydrograph, phototroph, ballistocardiograph, selenograph, trimorph, pantelegraph, metallograph, spirograph, cinematograph, chromolithograph, ergograph, paramorph, dph, caliph, siggraph, pantamorph, seismograph, chemoautotroph, telegraph, antigraph, aroph, nadph, cenotaph, roentgenograph, paraph, iph, aph, anapnograph, tomograph, syngraph, bathythermograph, embryotroph, anaglyptograph, kymograph, psalmograph, viewgraph, myomorph, bibliograph, diaglyph, pyrograph, photomicrograph, pianograph, lph, hyetograph, kaliph, haemolymph, phonograph, photolithograph, umph, thermetograph, melograph, holograph, stathmograph, skeuomorph, shadowgraph, spectroheliograph, nymph, triumph, rph, cyclograph, hektograph, sciagraph, randolph, stylograph, morosoph, guelph, pseudograph, copygraph, cryptograph, amorph, telephotograph, bumph, pneumatograph, plethysmograph, eph, chromatograph, electroencephalograph, micropantograph, kph, hygrograph, enantiomorph, coronagraph, serigraph, calligraph, kaph, petroglyph, addressograph, isomorph, photoautotroph, zincograph, ideograph, hygrothermograph, keraunograph, coronograph, sulph, hyalograph, bph, logogriph, ralph, autochronograph, glyphograph, micrograph, oomph, scotograph, scenograph, myograph, metrograph, perilymph, xylograph, electromyograph, elliptograph, sphygmograph, noctograph, dynamograph, cardiosphygmograph, adolph, seraph, lithoglyph, aerometeorograph, galvanograph, prototroph, dactylioglyph, cerograph, spherograph, astrograph, papyrograph, arcograph, stereograph, toph, phonautograph, endolymph, anemometrograph, polymorph, anthropomorph, paragraph, tachograph, graph, ectomorph, joseph, barothermograph, oleograph, anaglyph, accelerograph, pantagraph, encephalograph, omnigraph, teraph, neomorph, pantograph, photozincograph, ceriph, radiograph, ceph, koph, thermometrograph, allelomorph, mimeograph, epigraph, phrenograph, bathyscaph, syph, eidograph, gulph