mercurial

Any of the plants known as mercury, especially the annual mercury or French mercury (Mercurialis annua).

A person born under the influence of the planet Mercury; hence, a person having an eloquent, quickwitted, furtive, or volatile character.

As for [Lambert] Simnell, there was not much in him, more then that hee was a handſome Boy, and did not ſhame his Robes. But this Youth (of whom wee are now to ſpeake) was ſuch a Mercuriall, as the like hath ſeldome beene knowne; and could make his owne part, if at any time hee chanced to bee out.

A chemical compound containing mercury.

A preparation of mercury, especially as a treatment for syphilis.

She had paſſed through the milder Remedies frequently without ſucceſs: upon which account I deſigned Mercurialls; and beginning with Venæſection, afterwards purged her with decoct. epithymi, as it is preſcribed in the method of Cure. [...] After I had thus evacuated the Plethora, and diſpoſed her body for Mercurialls more operative, I gave her each morning and evening a few grains of Mercur. diaphoret. in a bolus with conſ. lujule and Mithridate, [...]

[A] small dose of the mercurial may cause excessive salivation; and, if this discharge be attended by much soreness of throat, it is most difficult to determine whether the salivation is actually the result of the mercurial, or merely symptomatic of the sore throat and cold. If it proceed from the mercurial, there will generally be some tenderness of the gums, a soft and flabby state of the sides of the tongue, and it will generally be more obstinate.

Having a lively or volatile character; animated, changeable, quick-witted.

his mercurial temperament

[Y]our Mercuriall wit hath mangonized a Gigantean fury with an humble hue.

Pertaining to the astrological influence of the planet Mercury; having the characteristics of a person under such influence (see adjective sense 1).

The Sun to the Terms of Mercury. It inclineth the native to be Mercurial, given to ſtudy Arts and Sciences, and to delight in reading, and to follow his Calling with chearfulneſs.

6thly, The ☽ separates from a △ of ♂︎, and applies to ☍ of ☿, lord of the 3d; which intimated that some neighbour of the querent, either with a letter, words, or cross information, would wholly destroy the querent's hopes; and that mercurial men, viz. scholars or divines, would be his enemies: [...]

Pertaining to the planet Mercury.

Of or pertaining to the element mercury or quicksilver; containing mercury.

Beware alſo of Mercuriall lotions, I meane any which haue Mercurie Sublimate Precipitat or otherwiſe prepared in them, for though they haue good qualities, yet they are vpon my knowledge and experience dangerous, [...]

[...] Dr. Francis Fuller, [...] upon wearing a Quick-ſilver Girdle, for the Cure of the Itch, (and that after an inconſiderate and raſh manner) was brought under a violent Spaſmodick Diſtemper, which was ſupposed by himſelf and others to be owing to ſome Mercurial Particles lodg'd in ſome excretory Ducts of the Brain.

Caused by the action of mercury or a mercury compound.

I ſaw in the Year 1709. a notable inſtance, where a Phyſician order'd the Patient to be Bled five times in a Mercurial Salivation in a Caſe not Venereal; when he did ſpit at the rate of ℔ iv. per diem, and it was at the height, and yet notwithſtanding it did continue for all this, and the Patient eſcap'd with his Life.

The last exciting cause of the mercurial ulcer, which I shall now mention, is the use of the knife or of the caustic, during a mercurial course, to wounds made or enlarged at this time; for the great additional irritation, which the operation must produce, disposes such wounds to take on easily the mercurial disease.

Alternative letter-case form of mercurial.

He firſt ſubſiſts in Jupiter, the artificer of the world; next, among the ſupermundane gods; in the third place, among the liberated gods; fourthly, in the planet Mercury; fifthly, in the Mercurial order of demons; […] Likewiſe in this city a certain man once flouriſhed, full of the Mercurial power, becauſe his ſoul formerly exiſted in the heavens of the Mercurial order. […] But afterwards a demon, becauſe from the god Mercury, through a Mercurial demon, gifts of this kind are tranſmitted to a Mercurial ſoul.

The alchemists too spoke of the return of the Mercurial spirit as a ‘celestial rain’, or ‘dew’ (Norton’s stilla roris madidi, Dee’s ros caeli), a ‘divine water’ falling from the ‘heaven’ of the vessel to reanimate the blackened earth of the Stuff.