13-letter words containing a, p, e, l
- naples yellow — a yellow pigment, used by artists; lead antimonate
- natural slope — the maximum angle at which soil will lie in a bank without slipping
- ne plus ultra — the highest point; acme.
- necrophiliacs — Plural form of necrophiliac.
- negative pole — the south-seeking pole of a magnet
- neo-platonism — a philosophical system which was first developed in the 3rd century ad as a synthesis of Platonic, Pythagorean, and Aristotelian elements, and which, although originally opposed to Christianity, later incorporated it. It dominated European thought until the 13th century and re-emerged during the Renaissance
- neocapitalism — a politico-economic theory combining elements of capitalism and socialism
- neocapitalist — a person who advocates neocapitalism
- neoencephalon — neencephalon.
- neoplasticism — the theory and practice of the de Stijl school, chiefly characterized by an emphasis on the formal structure of a work of art, and restriction of spatial or linear relations to vertical and horizontal movements as well as restriction of the artist's palette to black, white, and the primary colors.
- nephrological — of or relating to nephrology
- neuroatypical — Having an atypical neurological configuration.
- nickel-plated — covered with a thin layer of nickel, deposited usually by electrolysis
- non-adaptable — capable of being adapted.
- non-corporeal — of the nature of the physical body; bodily.
- non-empirical — derived from or guided by experience or experiment.
- non-ephemeral — lasting a very short time; short-lived; transitory: the ephemeral joys of childhood.
- non-episcopal — of or relating to a bishop: episcopal authority.
- non-imputable — to attribute or ascribe: The children imputed magical powers to the old woman.
- non-opposable — capable of being placed opposite to something else: the opposable thumb of primates.
- non-repayable — to pay back or refund, as money.
- non-reputable — held in good repute; honorable; respectable; estimable: a reputable organization.
- non-spherical — having the form of a sphere; globular.
- non-spillable — to cause or allow to run or fall from a container, especially accidentally or wastefully: to spill a bag of marbles; to spill milk.
- nonalphabetic — not employing alphabetic order
- nonapplicable — applying or capable of being applied; relevant; suitable; appropriate: an applicable rule; a solution that is applicable to the problem.
- noncomparable — not comparable
- noncompatible — Not compatible.
- noncompliance — failure or refusal to comply, as with a law, regulation, or term of a contract.
- nonconceptual — Not of a conceptual nature.
- nondepletable — not depletable
- nondisposable — Not disposable.
- nonexpendable — capable of being expended.
- nonperiodical — a magazine or other journal that is issued at regularly recurring intervals.
- nonperishable — not subject to rapid deterioration or decay: A supply of nonperishable food was kept for emergencies.
- nonprofitable — Not profitable; not making profit.
- nonpunishable — Not punishable; of an act, for which no punishment has been authorized; of a person, beyond the reach of punishment.
- nonreciprocal — given or felt by each toward the other; mutual: reciprocal respect.
- nonspecialist — a person who devotes himself or herself to one subject or to one particular branch of a subject or pursuit.
- normally-open — Normally-open switch contacts are in an open state at rest.
- normocephalic — Having a normal sized head; neither macrocephalic nor microcephalic; mesocephalic.
- nuclear power — power derived from nuclear energy.
- nucleocapsids — Plural form of nucleocapsid.
- nucleoplasmic — Of or pertaining to nucleoplasm.
- oak-apple day — (in Britain) May 29, the anniversary of the Restoration (1660), formerly commemorated by the wearing of oak apples or oak leaves, recalling the Boscobel oak in which Charles II hid after the battle of Worcester
- object pascal — (language) An object-oriented Pascal developed jointly by Apple Computer and Niklaus Wirth.
- oilspot glaze — a brown or black ceramic glaze dotted with silvery spots caused by impurities.
- old provencal — the Provençal language as found in documents from the 11th to the 16th centuries. Abbreviation: OPr.
- olympic games — international sports event
- omnicorporeal — Comprehending or including all bodies; embracing all substance.