13-letter words containing a, i, r, h, e
- iatrochemical — relating to iatrochemistry or iatrochemists
- iconographies — Plural form of iconography.
- ideographical — Alternative form of ideographic.
- ides of march — 15th March: ominous date
- immunotherapy — treatment designed to produce immunity to a disease or enhance the resistance of the immune system to an active disease process, as cancer.
- impact wrench — an electric or pneumatic power wrench with interchangeable toolhead attachments, used for installing and removing nuts, bolts, and screws.
- imperial moth — a yellow moth, Eacles imperialis, having a diagonal band of pinkish brown or purple: the hairy larvae feed on the leaves of hickory, oak, etc.
- in order that — used to introduce a clause of purpose
- initial rhyme — beginning rhyme.
- inner harbour — a part of a harbour which is further inland
- interchanging — Present participle of interchange.
- interchondral — of or relating to cartilage or a cartilage.
- interwreathed — Simple past tense and past participle of interwreathe.
- intrathecally — In an intrathecal way; into the spinal canal.
- irish pennant — an unwhipped rope end.
- ishihara test — a test for determining color blindness by means of a series of cards each having colored dots that form one pattern to the normal eye and a different pattern to the eye that is color-blind.
- isobathytherm — a line on a chart or diagram of a body of water, connecting depths having the same temperature.
- isothermobath — a line drawn on a diagram of a vertical section of the ocean connecting all points having equal temperature.
- johore strait — a narrow strait between Malaya and Singapore Island
- karaoke night — a social occasion when karaoke sessions are held for entertainment, often in a pub or bar
- kindheartedly — In a kindhearted manner.
- kinematograph — cinematograph.
- kinesitherapy — a movement-based therapy
- kitchen paper — also kitchen roll
- kitchen range — cooker with oven and hob
- knight errant — a wandering knight; a knight who traveled widely in search of adventures, to exhibit military skill, to engage in chivalric deeds, etc.
- knight-errant — a wandering knight; a knight who traveled widely in search of adventures, to exhibit military skill, to engage in chivalric deeds, etc.
- krishna menon — Vengalil Krishnan [ven-gah-leel krish-nuh n] /vɛnˈgɑ lil ˈkrɪʃ nən/ (Show IPA), 1897–1974, Indian politician and statesman.
- ladder stitch — an embroidery stitch in which crossbars at equal distances are produced between two solid ridges of raised work.
- lake-urumiyeh — Lake. Urmia, Lake.
- lamellibranch — bivalve.
- landownership — an owner or proprietor of land.
- lateral chain — an open chain of atoms attached to an atom of a larger chain, or to a ring.
- leigh-mallory — Sir Trafford Leigh [traf-erd lee] /ˈtræf ərd li/ (Show IPA), 1892–1944, British Air Force officer.
- leprechaunish — somewhat similar to a leprechaun
- lethargically — of, relating to, or affected with lethargy; drowsy; sluggish; apathetic.
- leukapheresis — a medical procedure that separates certain leukocytes from the blood, used to collect leukocytes for donation or to remove excessive leukocytes from a patient's blood
- lexicographer — a writer, editor, or compiler of a dictionary.
- lexicographic — Like a dictionary, relating to lexicography (the writing of a dictionary).
- lexigraphical — Misspelling of lexicographical.
- liebfraumilch — a white wine produced chiefly in the region of Hesse in Germany.
- life-or-death — life-and-death.
- light mineral — any rock-forming mineral that has a specific gravity of less than 2.8 and is generally light in color.
- light reading — reading which is not considered too demanding or intellectual
- light therapy — therapeutic exposure to full-spectrum artificial light that simulates sunlight, used to treat various conditions, as seasonal affective disorder.
- light-hearted — carefree; cheerful; merry: a lighthearted laugh.
- literacy hour — (in England and Wales) a daily reading and writing lesson that was introduced into the national primary school curriculum in 1998 to raise standards of literacy
- lucifer match — friction match.
- maccheroncini — thin pasta tubes made from wheat flour
- machine error — an error caused by a fault or defect in a machine rather than by human error