An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) (adj.) Assisting or intended to assist the → memory.
2) (adj.) Pertaining to → mnemonics or to memory.
3) (n.) Something intended to assist the memory, as a verse or formula. For example, "Oh, Be A Fine Girl, Kiss Me Right Now Sweetheart!" is a mnemonic for the sequence of stellar → spectral types.

From Gk. mnemonikos "of or pertaining to memory," from mnemon "remembering, mindful," from mnasthai "remember," from PIE base *men- "to think;" cf. Pers. man-, -mân, minu, → idea.

Yâdsepâr, stem of Yâdsepârdan "memorize," from yâd "remembrance, recollection, memory" (Mid.Pers. ayâd) + sepârdan, sepor- "to yield, give, hand over" (Mid.Pers. abespâr- "to hand over, entrust;" cf. O.N. spara, O.H.G. sparon, O.E. sparian, E. spare); yâdsepârik, → mnemonics.

Something capable of assisting one's memory. The process or technique of improving the memory.

→ mnemonic; → -ics.

1) Capable of moving or being moved readily.
2) A mobile phone.

From M.Fr. mobile, from L. mobilis "movable, easy to move; loose, not firm," contraction of *movibilis, from movere "to → move."

Miyâvâ verval adj. and agent noun from miyâvidan, → move.

Of or relating to mode, manner, or form.

→ mode; → -al.

The quality or state of being → modal.

→ modal; → -ity.

1) Physics: Any of the distinct patterns of oscillation that a given periodically varying system can have.
2) Math.: In a series of statistical data, the item or value which occurs most frequently. It is a measure of central tendency.

Mode, from Fr. mode, from L. modus "measure, rhythm, song, manner," from PIE base *med- "to measure, limit, judge, advise;" cf. L. meditari "to think or reflect upon, consider;" Av. mad- "to measure out, apportion, allot;" Gk. medein "to rule;" O.E. metan "to measure out."

Tarz "manner, mode," Arabicized as طرز. Tarz may be related to Av. darəsa- "appearance, looking" (huuarə.darəsa- "having the appearance of the sun"), from Av. darəs- "to look;" cf. Skt. darś-, drś- "to see, appear, look, show" darśa- "apperance, look," drśta- "apparent, visible."
Mod, loan from Fr., cognate with Av. mad- "to measure out, apportion, allot," as above.

1a) A mathematical representation of a process, system, or object developed to understand its behavior or to make predictions. The representation always involves certain simplifications and assumptions. See also → theory, → hypothesis.
1b) A mental image of a phenomenon using familiar terms (or images). For example, in the Bohr model the atom is visualized as a nucleus with electrons orbiting around it in a manner similar to the way that planets revolve around the Sun. While this model is use ul in understanding the atom, it is an over-simplified description of a real atom and does not describe/predict all of its attributes (G. Smooth, Lawrence Berkeley Lab website).
2) To make or construct a model of.

M.Fr. modelle (Fr. modèle), from It. modello "a model, mold," from V.L. *modellus, from L. modulus "measure, standard," from modus "manner, measure" (cf. Av. mad-, → mode), PIE *med- + -ulus, → -ula.

1) Model, from Fr. modèle. Tarzâl, from tarz, → mode + -âl, → -al.
2) Model sâxtan, from model + sâxtan, sâzidan "to build, make, fashion; to adapt, adjust, be fit" (from Mid.Pers. sâxtan, sâz-, Manichean Parthian s'c'dn "to prepare, to form;" Av. sak- "to understand, to mark," sâcaya- (causative) "to teach").
Tarzâlidan, from tarzâl + -idan infinitive suffix.

In a theoretical analysis, the solution that does not correctly treat the intervening parameters, or neglects some crucial factors.

→ model. dependence, noun of → dependent.

The simulation of a process, concept, or operation of a system often implemented by a computer program and making use of a mathematical treatment.

Verbal noun of → model

1) Relating or belonging to present and recent time. → modern physics.
2) Of or pertaining to the historical period following the Middle Ages.
3) Of the latest, most advanced kind, or using the most advanced equipment and techniques available.

From M.Fr. moderne, from L.L. modernus, from L. modo "lately, just now," from modo "to the measure," ablative of modus "manner, measure," → mode.

Novin, from now, → new, + -in adj. suffix, as in dirin, pasin, barin, kehin, mehin, behin, zirin, zabarin, pâyin, bâlâyin.

The physics developed since about 1900, which includes Einstein's → relativity theory and → quantum mechanics, as distinguished from → classical physics. Much of modern physics is concerned with the behavior of matter and energy under extreme conditions or on the very small scale.

→ modern; → physics.

1) Modern spirit or character.
2) Modern usage, expression, or trait.
3) In early 20th century art, literature, and architecture, a movement characterized by the use of unconventional subject matter and style, experimental technique, etc.

→ modern + → -ism.

1) An admirer of modern ideas, ways, etc.
2) Someone who practises or advocates → Modernism.

→ modern + → -ist.

1) The quality of being → modern.
2) A rather diffuse term with many meanings depending on the disciplinary context. Generally, modernity refers to the cultural, intellectual, and economic consequences of the → Enlightenment and the epoch with which they are associated. Modernity is the end result of the → modernization process.

→ modern + → -ity.

1) The act of modernizing; the state of being modernized; something modernized.
2) A pattern of social and economic change initiated in the 17th century in Western Europe and subsequently extended to many other parts of the world. Its characteristics include secularization, rationalization in political and economic life, industrialization, urbanization, and increased level of popular involvement in public affairs.

Verbal noun of → modernize; → -tion.

To bring something up to modern standards, or adapt it to modern style, conditions, etc.

→ modern + → -ize.

An act or instance of modifying; the state of being modified; partial alteration.

Verbal noun of → modify.

A modification of the Julian Date, representing the number of days that have elapsed since midnight (instead of noon) at the beginning of Wednesday November 17, 1858. MJD = JD - 2,400,000.5 The reason for adopting that date is the fact that the Julian Day 2,400,000 just happens to be November 17, 1858.

→ modify; → Julian date.

A modification of the Newton's law of gravitation below a critical acceleration of about 1.2 x 10^-8 cm s^-2, where the gravitational force scales as 1/r instead of 1/r². Originally put forward to describe the rotation curves of galaxies with no need to assume any dark matter, MOND is now tested at larger cosmological scales (Milgrom, M. 1983, ApJ, 270, 365).

→ modify; → Newtonian dynamics.

A quantity defined as Π = (dM/dt) v_∞ R^0.5 for a star with radius R having a wind with → terminal velocity v_∞ and a → mass loss rate dM/dt. There is a tight linear relation between the modified wind momenta and the stellar luminosities for → Population I→ O stars. See also → wind momentum.

→ modify; → wind; → momentum.