11 letters

Axisymmetry ∙ nonsymmetry dissymmetry ∙ dyssymmetry strabometry helicometry pelycometry atmidometry pangeometry Biogeometry tacheometry ∙ archeometry ∙ stereometry ∙ stichometry ∙ conchometry psychometry ∙ graphometry morphometry ∙ stethometry cardiometry craniometry ∙ alloiometry tensiometry ∙ physiometry pluviometry ∙ alkalometry dynamometry ∙ thermometry ∙ seismometry ∙ volumometry sthenometry splenometry iodinometry salinometry ∙ Actinometry ∙ chronometry ∙ opsonometry amperometry arthrometry chlorometry ∙ fluorometry ∙ dilatometry ∙ hematometry somatometry keratometry dioptometry ∙ elastometry plastometry ∙ mythopoetry whodunnitry ∙ noninfantry sycophantry ∙ ingallantry componentry semicountry backcountry ∙ antibigotry criticastry stenogastry physogastry bathygastry archemastry alchemistry preministry proministry subindustry ∙ preindustry nonindustry ∙ bioindustry ∙ proindustry chemocautry

12 letters

maschaliatry archaeolatry vexillolatry diabololatry Symbololatry ∙ mechanolatry marianolatry mammonolatry sermonolatry parsonolatry aischrolatry martyrolatry planetolatry pulpitolatry infantolatry Christolatry ichthyolatry ∙ pickpocketry ecotelemetry biotelemetry ∙ turbidimetry ∙ syphilimetry isoperimetry ∙ comburimetry viscosimetry ∙ hydrotimetry hemisymmetry antisymmetry holosymmetry monosymmetry ∙ merosymmetry polysymmetry thoracometry apomecometry epipedometry archaeometry ∙ metageometry psycheometry laryngometry ebulliometry ∙ cephalometry ∙ nephelometry ∙ oscillometry pupillometry astigmometry applanometry tympanometry galvanometry ∙ lichenometry carbonometry trigonometry ∙ hemadrometry hemodrometry hysterometry psychrometry ∙ urethrometry erythrometry respirometry ∙ electrometry ∙ spectrometry ∙ dioptrometry ellipsometry palpatometry olfactometry ∙ galactometry ∙ Magnetometry ∙ densitometry ∙ sensitometry ∙ argentometry metrotometry eidoptometry uroflowmetry shipwrightry playwrightry daredeviltry ∙ lieutenantry ∙ unpleasantry ∙ macroreentry microreentry counterentry intercountry ∙ ecclesiastry mortancestry agroforestry ∙ geochemistry ∙ biochemistry ∙ zoochemistry ∙ anabaptistry agroindustry ∙

13 letters

Homeosineatry ophthalmiatry classicolatry lithoidolatry ecclesiolatry ∙ parthenolatry episcopolatry anthropolatry ∙ grammatolatry thaumatolatry ∙ chloridimetry tyndallimetry ∙ albuminimetry saccharimetry ∙ semiperimetry diastasimetry chronaximetry tetrasymmetry orthosymmetry supersymmetry ∙ psychodometry hypergeometry tocoergometry tokoergometry stoechiometry ∙ stoichiometry ∙ pyrheliometry historiometry esthesiometry potentiometry ∙ alcoholometry ∙ stalagmometry ∙ diaphanometry volumenometry albuminometry polygonometry orbitonometry aerotonometry anthropometry ∙ saccharometry pneumatometry ∙ refractometry ∙ reflectometry ∙ conductometry perioptometry photoptometry hemacytometry ektacytometry hemocytometry complexometry nanocircuitry dolichogastry philologastry chiropodistry antisophistry metachemistry agrichemistry zymochemistry sonochemistry topochemistry ∙ cytochemistry ∙ underministry pedodontistry superindustry interindustry ∙

14 letters

antipsychiatry ∙ geropsychiatry grammatoloatry Videotelemetry radiotelemetry ∙ microdosimetry photogrammetry ∙ pseudosymmetry ∙ centrosymmetry pseudogeometry hematachometry hemotachometry morphobiometry stoicheiometry ∙ osphresiometry scoliosiometry absorptiometry crystallometry ophthalmometry ∙ geothermometry strabismometry plethysmometry rhinomanometry roentgenometry telephonometry autophonometry geochronometry osseosonometry hydrobarometry interferometry ∙ cavernosometry astigmatometry diffractometry ∙ pyrophotometry ∙ autophotometry cytophotometry ∙ haemacytometry microcircuitry ∙ philosophastry pathochemistry lithochemistry radiochemistry ∙ heliochemistry collochemistry cosmochemistry ∙ phonochemistry ∙ macrochemistry microchemistry ∙ hydrochemistry iatrochemistry ∙ petrochemistry ∙ astrochemistry ∙ neurochemistry ∙ photochemistry ∙ protochemistry histochemistry ∙ phytochemistry ∙ piezochemistry ∙ pseudoministry

15 letters

orthopsychiatry ∙ chemopsychiatry ∙ ethnopsychiatry neuropsychiatry ∙ antibibliolatry Stratarithmetry radiopelvimetry pseudoasymmetry thermoasymmetry tetartosymmetry phototachometry Phytopathometry scoliosciometry radiogoniometry ventriculometry hemadynamometry hemochromometry telethermometry gastrotonometry biospectrometry angioscotometry microphotometry ∙ astrophotometry Paleobathymetry biogeochemistry ∙ stereochemistry ∙ psychochemistry ∙ physiochemistry thermochemistry ∙ technochemistry actinochemistry ∙ immunochemistry ∙

16 letters

shakespearolatry microcolorimetry thermogravimetry cardiotachometry tachygraphometry histomorphometry immunoradiometry goniocraniometry hydrodynamometry exophthalmometry paleothermometry uterothermometry microseismometry sphygmomanometry hypokeimenometry hemoglobinometry urosaccharometry fluorophotometry chromatoptometry erythrocytometry phlebopiezometry physicochemistry mechanochemistry electrochemistry spectrochemistry magnetochemistry electrodentistry

17 letters

cephalopelvimetry spectroradiometry pelvicephalometry phlebodynamometry psychochronometry bronchospirometry microdensitometry electrophotometry spectrophotometry electrogustometry urethrocystometry pharmacochemistry pneumatochemistry

18 letters

spectrocolorimetry hysterothermometry ophthalmotonometry spectrofluorometry psychobiochemistry crystallochemistry

19 letters

sphygmoviscosimetry ultramicrochemistry bioelectrochemistry glycohistochemistry immunocytochemistry

20 letters

stereophotogrammetry stereoencephalometry ophthalmodynamometry immunohistochemistry

21 letters

radiocephalpelvimetry cytospectrophotometry photoelectrochemistry

22 letters

microspectrophotometry

23 letters

spectrophotofluorimetry

Words with a ∙ are valid Scrabble words (SOWPODS word list)