13-letter words that end in al
- ichthyofaunal — relating to ichthyofauna
- ideal crystal — a crystal in which there are no defects or impurities
- ideographical — Alternative form of ideographic.
- immigrational — the act of immigrating.
- immunological — (immunology) Of, or relating to immunology.
- implicational — something implied or suggested as naturally to be inferred or understood: to resent an implication of dishonesty.
- incarnational — an incarnate being or form.
- inequilateral — not equilateral; having unequal sides.
- inferolateral — (anatomy) Both inferior and lateral.
- infinitesimal — indefinitely or exceedingly small; minute: infinitesimal vessels in the circulatory system.
- informational — knowledge communicated or received concerning a particular fact or circumstance; news: information concerning a crime.
- inframarginal — below the margin; submarginal.
- inoperational — Not operational.
- inquisitional — Of or pertaining to an inquisition.
- inquisitorial — of or relating to an inquisitor or inquisition.
- inscriptional — Of or pertaining to inscription.
- inset initial — an initial letter, especially of the first word of a chapter or other section of a book, magazine, etc., larger than the body type and occupying two or more lines in depth, causing body type to be set around it.
- inspirational — imparting inspiration.
- institutional — of, relating to, or established by institution.
- instructional — the act or practice of instructing or teaching; education.
- insubstantial — not substantial or real; lacking substance: an insubstantial world of dreams.
- interactional — reciprocal action, effect, or influence.
- intercerebral — (anatomy) Between the two cerebral hemispheres.
- interchondral — of or relating to cartilage or a cartilage.
- intercolonial — between colonies, as of one country.
- intercommunal — used or shared in common by everyone in a group: a communal jug of wine.
- intercortical — situated within a cortex
- intercultural — pertaining to or taking place between two or more cultures: intercultural exchanges in music and art.
- interfamilial — of, relating to, or characteristic of a family: familial ties.
- intermarginal — occurring or situated between two margins
- international — between or among nations; involving two or more nations: international trade.
- interneuronal — (neurology) Between neurons.
- interparental — of or relating to a parent.
- interparietal — situated between the two parietal bones of the skull
- interpersonal — of or pertaining to the relations between persons: He has strong interpersonal skills.
- interproximal — situated toward the point of origin or attachment, as of a limb or bone. Compare distal (def 1).
- interregional — of or relating to a region of considerable extent; not merely local: a regional meeting of the Boy Scouts.
- intersidereal — interstellar
- intersocietal — noting or pertaining to large social groups, or to their activities, customs, etc.
- intertemporal — Describing any relationship between past, present and future events or conditions.
- interterminal — occurring or existing between, or travelling between, transport terminals
- intertropical — situated or occurring between the tropic of Cancer and the tropic of Capricorn; tropical.
- intraarterial — Into an artery.
- intracerebral — Occurring or situated within the cerebrum.
- intracultural — Within a single culture.
- intramarginal — existing or occurring within a margin or limit.
- intranational — within one nation; occurring or existing within a nation's boundaries.
- intraparietal — situated within the walls of a hollow organ
- intrapersonal — existing or occurring within the self or within one's mind: People with high intrapersonal intelligence are aware of their strengths and weaknesses. Intrapersonal conflict can lead to emotional stress.
- intraregional — Within a region.