15-letter words containing r, e, a, n, l
- artificial gene — a duplicate gene synthesized in the laboratory by combining nucleotides in a sequence characteristic of the copied gene.
- artificialness' — made by human skill; produced by humans (opposed to natural): artificial flowers.
- artillery plant — any of various tropical urticaceous plants of the genus Pilea, such as P. microphylla, all having stamens that discharge their pollen explosively
- assemblypersons — Plural form of assemblyperson.
- at arm's length — If you hold something at arm's length, you hold it away from your body with your arm straight.
- at first glance — If you say that something is true or seems to be true at first glance, you mean that it seems to be true when you first see it or think about it, but that your first impression may be wrong.
- at right angles — If two things are at right angles, they are situated so that they form an angle of 90° where they touch each other. You can also say that one thing is at right angles to another.
- at the controls — If someone is at the controls of a machine or other piece of equipment, they are operating it.
- atlantic ridley — ridley (def 1).
- atlantic-ridley — ridley (def 1).
- atrabiliousness — The state or quality of being characterized by melancholy or glumness.
- attorney-at-law — a lawyer qualified to represent in court a party to a legal action
- auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
- australian pine — casuarina
- autocorrelation — the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independent
- autofluorescent — Of, pertaining to, or exhibiting autofluorescence.
- avant la lettre — before the (specified) concept, word, person, etc. existed
- back plastering — the introduction of partitions of lath and plaster between the inner and outer surfaces of a stud wall in order to improve the insulating properties of the wall.
- baggage handler — a person who moves baggage onto and off planes at an airport
- balance control — a state of equilibrium or equipoise; equal distribution of weight, amount, etc.
- balanced rudder — a rudder so designed that the center of water pressure on the forward face, when turned, lies about halfway along the length, minimizing the turning effort required.
- balloon barrage — a series of moored balloons, usually strung together and hung with cables, for impeding a low-level attack by enemy aircraft.
- ballpeen hammer — a hammer that has one end of its head shaped in a hemisphere for beating metal, etc
- ballroom dancer — a person who participates in ballroom dancing
- banana republic — Small, poor countries that are politically unstable are sometimes referred to as banana republics.
- bandpass filter — A bandpass filter is a filter designed to pass all frequencies within a band of frequencies.
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- bangtail muster — a roundup of cattle to be counted, each one having the hairs on its tail docked as it is counted
- banner headline — A banner headline is a large headline in a newspaper that stretches across the front page.
- barcelona chair — an armless, padded leather chair on a steel frame shaped like a curved X: Barcelona is a trademark for this chair
- barley sandwich — a drink of beer, esp at lunch time
- barrage balloon — Barrage balloons are large balloons which are fixed to the ground by strong steel cables. They are used in wartime, when the cables are intended to destroy low-flying enemy aircraft.
- barycentrically — In a barycentric manner.
- battle hardened — toughened by the experience of battle
- beach goldenrod — a composite plant, Solidago sempervirens, of eastern and southern North America, having a thick stem and large, branched, one-sided terminal clusters of yellow flowers, flourishing on sea beaches or salt marshes.
- bear animalcule — tardigrade (def 3).
- belgian griffon — one of a variety of the Brussels griffon having a black or reddish-brown and black coat.
- belt-and-braces — providing double security, in case one security measure should fail
- benedict arnold — Benedict, 1741–1801, American general in the Revolutionary War who became a traitor.
- benzal chloride — a colorless, oily liquid, C 7 H 6 Cl 2 , used chiefly in the synthesis of benzaldehyde, and in the manufacture of dyes.
- benzyl butyrate — a liquid, C 11 H 14 O 2 , having a fruitlike odor, used as a plasticizer and in flavoring.
- bernoulli trial — one of a sequence of independent experiments each of which has the same probability of success, such as successive throws of a die, the outcome of which is described by a binomial distribution
- bidirectionally — in a bidirectional manner
- binomial series — an infinite series obtained by expanding a binomial raised to a power that is not a positive integer.
- black horehound — a hairy unpleasant-smelling chiefly Mediterranean plant, Ballota nigra, having clusters of purple flowers: family Lamiaceae (labiates)
- black operation — a covert and undocumented military operation
- black snakeroot — a tall bugbane, Cimicifuga racemosa, of the buttercup family, of eastern North America, having thin, tapering, toothed or deeply cut leaflets and branched clusters of small, white flowers.
- bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
- blank cartridge — a cartridge containing powder but no bullet: used in battle practice or as a signal
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.