Operations instruments and practitioners

Ovum Philosophicum

An egg-shaped glass vessel for philosophical operations.

From the book

A Chymical Dictionary

Gerhard Dorn and John French · Diotimos Editions · 2026

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Orientation

At a Glance

  • The wordAn egg-shaped glass vessel for philosophical operations.
  • In the bookPelicanus supplies another vessel name, defined through circulation, while Pyramis is defined through a pyramidal form.
  • A place to readThe historical definition below, 1650 dictionary, unnumbered definition page 37; facsimile PDF page 365.

Historical definition

Ovum Philosophicum is an egg-shaped glass used by philosophers in their operations.

Meaning

The name is explained through the vessel’s form. The glass is shaped like an egg; the definition does not identify a biological egg as the material of the operation.

Use in the book

Pelicanus supplies another vessel name, defined through circulation, while Pyramis is defined through a pyramidal form. The comparisons distinguish a shape, an operative role and another shape without requiring a single standard vessel design.

Places to read

  1. Ovum PhilosophicumRead the complete historical definition and its commentary.
  2. PelicanusA vessel defined through circulation.
  3. PhialaA glass bottle or vial.
  4. PyramisA vessel identified through its pyramidal form.

In this edition

The egg image is grounded in the explicit description. Further symbolic readings would need a particular author’s passage; they are not established by this brief instrument gloss alone.

Source note

Historical source. 1650 dictionary, unnumbered definition page 37; facsimile PDF page 365 — Facsimile

Sources. A Chymicall Dictionary (1650), s.v. Ovum Philosophicum; 1650 facsimile PDF p. 365; compare Pelicanus, Phiala, Pyramis, Cœlum Spagiricum