13-letter words containing a, c, t, i
- hypsometrical — Of or pertaining to hypsometry.
- hyracotherium — eohippus.
- iatrochemical — relating to iatrochemistry or iatrochemists
- iceman cometh — a play (1946) by Eugene O'Neill.
- ichthyofaunal — relating to ichthyofauna
- ichthyopsidan — a member of the class Ichthyopsida
- ichthyosaurus — ichthyosaur.
- ideal crystal — a crystal in which there are no defects or impurities
- identicalness — The state or quality of being identical.
- identity card — a card for identifying the bearer, giving name, address, and other personal data.
- ideogrammatic — Of or pertaining to ideograms.
- idiochromatic — (of a mineral) deriving a characteristic color from its capacity to absorb certain light rays.
- idiomatically — peculiar to or characteristic of a particular language or dialect: idiomatic French.
- idiomaticness — Idiomaticity.
- idiosyncratic — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
- illocutionary — pertaining to a linguistic act performed by a speaker in producing an utterance, as suggesting, warning, promising, or requesting.
- imagistically — (often initial capital letter) a theory or practice of a group of poets in England and America between 1909 and 1917 who believed that poetry should employ the language of common speech, create new rhythms, have complete freedom in subject matter, and present a clear, concentrated, and precise image.
- immanentistic — relating to immanentism
- immunifacient — causing immunity
- impact crater — crater (def 2).
- impact wrench — an electric or pneumatic power wrench with interchangeable toolhead attachments, used for installing and removing nuts, bolts, and screws.
- impactfulness — The quality of being impactful.
- impeccability — faultless; flawless; irreproachable: impeccable manners.
- imperialistic — the policy of extending the rule or authority of an empire or nation over foreign countries, or of acquiring and holding colonies and dependencies.
- implacability — not to be appeased, mollified, or pacified; inexorable: an implacable enemy.
- implicational — something implied or suggested as naturally to be inferred or understood: to resent an implication of dishonesty.
- implicatively — In an implicative way.
- impolitically — In a way that is impolitic.
- impracticable — not practicable; incapable of being put into practice with the available means: an impracticable plan.
- impracticably — In an impracticable way.
- impractically — In an impractical manner.
- impredicative — (of a definition) given in terms that require quantification over a range that includes that which is to be defined, as having all the properties of a great general where one of the properties as ascribed must be that property itself
- impredictable — (nonstandard) unpredictable.
- in attendance — If someone is in attendance at a place or an event, they are there.
- in particular — of or relating to a single or specific person, thing, group, class, occasion, etc., rather than to others or all; special rather than general: one's particular interests in books.
- in the act of — while committing: crime, transgression
- in triplicate — in three copies, times three
- inacquiescent — Not acquiescent.
- inarticulated — Not articulated; not connected by a joint.
- incandescents — Plural form of incandescent.
- incapacitated — unable to act, respond, or the like (often used euphemistically when one is busy or otherwise occupied): He can't come to the phone now—he's incapacitated.
- incarcerating — Present participle of incarcerate.
- incarceration — the act of incarcerating, or putting in prison or another enclosure: The incarceration rate has increased dramatically.
- incarcerative — to imprison; confine.
- incardination — to institute as a cardinal.
- incarnational — an incarnate being or form.
- incentive pay — additional pay, a higher wage, or a bonus paid to promote the productivity of an employee.
- incessantness — Quality of being incessant.
- incidentaloma — an abnormal lesion or tumor detected by chance during a medical imaging test, physical examination, or surgery.
- inclinatorium — an instrument invented by Robert Norman in 1576, used to determine the degree to which a magnetic needle dips towards the earth; a dipping needle