from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The fourth letter of the modern English alphabet.
- n. Any of the speech sounds represented by the letter d.
- n. The fourth in a series.
- n. Something shaped like the letter D.
- n. The lowest passing grade given to a student in a school or college.
- n. Music The second tone in the scale of C major or the fourth tone in the relative minor scale.
- n. Music A key or scale in which D is the tonic.
- n. Music A written or printed note representing this tone.
- n. Music A string, key, or pipe tuned to the pitch of this tone.
- abbr. deuteron
- abbr. diameter
- abbr. differential
- abbr. down quark
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The fourth letter of the basic modern Latin alphabet.
- n. cardinal number five hundred (500).
- n. the differential of a quantity
- n. voiced alveolar plosive
- n. The fourth letter of the English alphabet, called dee and written in the Latin script.
- n. The ordinal number fourth, derived from this letter of the English alphabet, called dee and written in the Latin script.
- abbr. died, death.
- abbr. declared; also abbreviated as dec
- n. a British penny; an old penny (the modern decimal penny being abbreviated p).
- n. dice to use in a diceroll
- n. penny, a measure of the size of nails
from the GNU version of the Collaborative International Dictionary of English
- The fourth letter of the English alphabet, and a vocal consonant. The English letter is from Latin, which is from Greek, which took it from Phœnician, the probable ultimate origin being Egyptian. It is related most nearly to t and th. See Guide to Pronunciation, √178, 179, 229.
- The nominal of the second tone in the model major scale (that in C), or of the fourth tone in the relative minor scale of C (that in A minor), or of the key tone in the relative minor of F.
- As a numeral D stands for 500. in this use it is not the initial of any word, or even strictly a letter, but one half of the sign � (or � ) the original Tuscan numeral for 1000.
from The Century Dictionary and Cyclopedia
- The fourth letter and third consonant in the English alphabet: the corresponding character has the same position and the same value also in the Latin, Greek, and Phenician alphabets, from which it comes to us. (See A.)
- As a numeral, in the Roman system, D stands for 500; when a dash or stroke is placed over it, as D, it stands for 5,000.
- As a symbol: In music: The second tone, or re, of the scale of C.
- A note which represents this tone.
- The key-note of the key of two sharps .
- On the keyboard of the organ or pianoforte, the white key or digital included in each group of two black keys.
- The string in a stringed instrument that is tuned to the tone D, as the third string of the violin, etc. In chem., D is the symbol of didymium.
- In mathematics, d is the sign of differentiation, ∂ of partial differentiation,
δof variation, D of derivation (commonly in the sense of taking the differential coefficient), ▵ of differencing, and ⾿ of the Hamiltonian operator.
- In the mnemonic words of logic, the sign of reduction to darii.
- As an abbreviation: In Eng. reckoning (d. or d.), an abbreviation of denarius, the original name for the English penny: as, £ s. d., pounds, shillings, and pence; 2s. 1d., two shillings and one penny.
- Before a date (d.), an abbreviation of died.
- In dental formulas, an abbreviation of deciduous, prefixed without a period to the letters i, c, and m: thus, di., deciduous incisor; dc., deciduous canine; dm., deciduous molar: all being teeth of the milk-dentition of a diphyodont mammal.
- or, more simply, taking one half of each jaw only, di. , dc. , dm. . In either case the numbers above the line are those of the upper teeth, and those below the line of the under teeth. See dental.
- In anatomy and ichthyology (d. or D.), an abbreviation of dorsal (vertebra or fin, respectively).
- In a ship's logbook (d.), an abbreviation of drizzling.
- A form of -ed, -ed, in certain words. See -ed, -ed.
- n. In music, an abbreviation of da capo.
- n. An abbreviation of Latin (ML.) divinitatis doctor, Doctor of Divinity.
- An abbreviation of the Latin defensor fidei, defender of the faith. See defender.
- An abbreviation of the Latin Dei gratia, by the grace of God.
- n. In music, an abbreviation of destra mano (which see).
- n. Abbreviations of Doctor of Music.
- An abbreviation of dead-reckoning.
- n. An abbreviation of dal segno.
- n. An abbreviation of the Latin Deo volente, God willing. See Deo volente.
- In music: Also, the key-note of the minor key medieval music, the final of the Dorian and Hypodorian modes.
- In chem.: d- before certain compounds has reference to their behavior toward polarized light, namely, to their dextrorotation, as distinguished from their inaction (i-) or levorotation (l-).
- In mathematics: D is also used for the number denoting the deficiency of a curve (what its number of double points lacks of the maximum).
- As an abbreviation: In law (D.), an abbreviation of Decree, Decret, Dictum.
- In medicine (d.), an abbreviation of: diopter or dioptric;
- dexter (right.);
- divide (in prescriptions).
- (D.) Of Democrat, Deus (God), Dominus (Lord), Dutch; (d.) of daughter, delete (cancel), density.
- Short for damn (often printed d—).
- Any mechanical device or appliance which resembles the letter D; specifically, in a harness, a loop of metal which has a straight bar joined at each end to a semicircular loop: used as a support for a strap. Also written dee. See D-trap and D-valve.
- n. An abbreviation of Doomsday Book.
- n. An abbreviation of direct current;
- n. of District Court;
- n. of District of Columbia;
- n. of Deputy Consul;
- n. of Divus Cæsar (the divine Cæsar).
- n. An abbreviation of Dynamical Engineer, a degree conferred at the completion of a graduate course in mechanical engineering.
- An abbreviation of Dean of the Faculty.
- An abbreviation of deadhead or deadheaded.
- n. An abbreviation of Deputy Lieutenant;
- n. of Doctor of Law, a degree equivalent to D. C. L.
- n. of Doctor of Literature, a degree equivalent to D. Lit.
- An abbreviation of Doctor of Oratory
- of Doctor of Osteopathy.
- An abbreviation of Doctor of Pharmacy.
- In electricity, an abbreviation for double pole.
- n. An abbreviation of Doctor of Science.
- n. Abbreviations of Doctor of Theology.
- n. An abbreviation of delirium tremens.
- n. In electricity, of double-throw: as, a d. t. switch.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the 4th letter of the Roman alphabet
- adj. denoting a quantity consisting of 500 items or units
- n. a fat-soluble vitamin that prevents rickets
- n. the cardinal number that is the product of one hundred and five
Modification of capital letter D, from Ancient Greek letter Δ (D, "Delta"). (Wiktionary)
Lower case form of upper case roman numeral D, a standardization of D or Ð, from tally stick markings resembling a superimposed Ɔ and ⋌, from the practice of encircling each hundredth ⋌ notch. (Wiktionary)