What is "blue mass"

Mass \Mass\, n. [OE. masse, F. masse, L. massa; akin to Gr. ? a barley cake, fr. ? to knead. Cf. Macerate.]

1. A quantity of matter cohering together so as to make one body, or an aggregation of particles or things which collectively make one body or quantity, usually of considerable size; as, a mass of ore, metal, sand, or water.

   If it were not for these principles, the bodies of the earth, planets, comets, sun, and all things in them, would grow cold and freeze, and become inactive masses.
   --Sir I. Newton.

   A deep mass of continual sea is slower stirred To rage.
   --Savile.

2. (Phar.) A medicinal substance made into a cohesive, homogeneous lump, of consistency suitable for making pills; as, blue mass.

3. A large quantity; a sum.

   All the mass of gold that comes into Spain.
   --Sir W. Raleigh.

   He had spent a huge mass of treasure.
   --Sir J. Davies.

4. Bulk; magnitude; body; size.

   This army of such mass and charge.
   --Shak.

5. The principal part; the main body.

   Night closed upon the pursuit, and aided the mass of the fugitives in their escape.
   --Jowett (Thucyd.).

6. (Physics) The quantity of matter which a body contains, irrespective of its bulk or volume.

   Note: Mass and weight are often used, in a general way, as interchangeable terms, since the weight of a body is proportional to its mass (under the same or equal gravitative forces), and the mass is usually ascertained from the weight. Yet the two ideas, mass and weight, are quite distinct. Mass is the quantity of matter in a body; weight is the comparative force with which it tends towards the center of the earth. A mass of sugar and a mass of lead are assumed to be equal when they show an equal weight by balancing each other in the scales.

   Blue mass. See under Blue.

   Mass center (Geom.), the center of gravity of a triangle.

   Mass copper, native copper in a large mass.

   Mass meeting, a large or general assembly of people, usually a meeting having some relation to politics.

   The masses, the great body of the people, as contrasted with the higher classes; the populace.

Blue \Blue\ (bl[=u]), a. [Compar. Bluer (bl[=u]"[~e]r); superl. Bluest.] [OE. bla, blo, blew, blue, livid, black, fr. Icel.bl[=a]r livid; akin to Dan. blaa blue, Sw. bl[*a], D. blauw, OHG. bl[=a]o, G. blau; but influenced in form by F. bleu, from OHG. bl[=a]o.]

1. Having the color of the clear sky, or a hue resembling it, whether lighter or darker; as, the deep, blue sea; as blue as a sapphire; blue violets. ``The blue firmament.''
   --Milton.

2. Pale, without redness or glare, -- said of a flame; hence, of the color of burning brimstone, betokening the presence of ghosts or devils; as, the candle burns blue; the air was blue with oaths.

3. Low in spirits; melancholy; as, to feel blue.

4. Suited to produce low spirits; gloomy in prospect; as, thongs looked blue. [Colloq.]

5. Severe or over strict in morals; gloom; as, blue and sour religionists; suiting one who is over strict in morals; inculcating an impracticable, severe, or gloomy mortality; as, blue laws.

6. Literary; -- applied to women; -- an abbreviation of bluestocking. [Colloq.] The ladies were very blue and well informed. --Thackeray. Blue asbestus. See Crocidolite. Blue black, of, or having, a very dark blue color, almost black. Blue blood. See under Blood. Blue buck (Zo["o]l.), a small South African antelope ( Cephalophus pygm[ae]us); also applied to a larger species ( [AE]goceras leucoph[ae]us); the blaubok. Blue cod (Zo["o]l.), the buffalo cod. Blue crab (Zo["o]l.), the common edible crab of the Atlantic coast of the United States ( Callinectes hastatus). Blue curls (Bot.), a common plant ( Trichostema dichotomum), resembling pennyroyal, and hence called also bastard pennyroyal. Blue devils, apparitions supposed to be seen by persons suffering with delirium tremens; hence, very low spirits. ``Can Gumbo shut the hall door upon blue devils, or lay them all in a red sea of claret?'' --Thackeray. Blue gage. See under Gage, a plum. Blue gum, an Australian myrtaceous tree ( Eucalyptus globulus), of the loftiest proportions, now cultivated in tropical and warm temperate regions for its timber, and as a protection against malaria. The essential oil is beginning to be used in medicine. The timber is very useful. See Eucalyptus. Blue jack, Blue stone, blue vitriol; sulphate of copper. Blue jacket, a man-of war's man; a sailor wearing a naval uniform. Blue jaundice. See under Jaundice. Blue laws, a name first used in the eighteenth century to describe certain supposititious laws of extreme rigor reported to have been enacted in New Haven; hence, any puritanical laws. [U. S.] Blue light, a composition which burns with a brilliant blue flame; -- used in pyrotechnics and as a night signal at sea, and in military operations. Blue mantle (Her.), one of the four pursuivants of the English college of arms; -- so called from the color of his official robes. Blue mass, a preparation of mercury from which is formed the blue pill. --McElrath. Blue mold or Blue mould, the blue fungus ( Aspergillus glaucus) which grows on cheese. --Brande & C. Blue Monday,

   1. a Monday following a Sunday of dissipation, or itself given to dissipation (as the Monday before Lent).

   2. a Monday considered as depressing because it is a workday in contrast to the relaxation of the weekend. Blue ointment (Med.), mercurial ointment. Blue Peter (British Marine), a blue flag with a white square in the center, used as a signal for sailing, to recall boats, etc. It is a corruption of blue repeater, one of the British signal flags. Blue pill. (Med.)

      1. A pill of prepared mercury, used as an aperient, etc.

      2. Blue mass. Blue ribbon.

         1. The ribbon worn by members of the order of the Garter; -- hence, a member of that order.

         2. Anything the attainment of which is an object of great ambition; a distinction; a prize. ``These [scholarships] were the
            --blue ribbon of the college.''
            --Farrar.

   3. The distinctive badge of certain temperance or total abstinence organizations, as of the
      --Blue ribbon Army.

      Blue ruin, utter ruin; also, gin. [Eng. Slang]
      --Carlyle.

      Blue spar (Min.), azure spar; lazulite. See Lazulite.

      Blue thrush (Zo["o]l.), a European and Asiatic thrush ( Petrocossyphus cyaneas).

      Blue verditer. See Verditer.

      Blue vitriol (Chem.), sulphate of copper, a violet blue crystallized salt, used in electric batteries, calico printing, etc.

      Blue water, the open ocean.

      Big Blue, the International Business Machines corporation. [Wall Street slang.] PJC

      To look blue, to look disheartened or dejected.

      True blue, genuine and thorough; not modified, nor mixed; not spurious; specifically, of uncompromising Presbyterianism, blue being the color adopted by the Covenanters.

      For his religion . . . 'T was Presbyterian, true blue.
      --Hudibras.

n. (cx medicine historical English) A pill of prepared mercury, used as an aperient, etc.

A Blue Mass is a Mass celebrated annually in the Catholic Church for those employed in the "public safety field" (i.e. police officers, firefighters, correctional officers, 911 operators and EMS Personnel). The color blue relates to the blue-colored uniforms predominantly used by these services. Similar to the Red Mass, the service honors those who have died in the line of duty and those currently serving as first responders. The Mass is an opportunity for the community to show gratitude to first responders and their families.