- (botany, dated) The study of the internal structures of plants.
1821, Elements of the Philosophy of Plants, translation of original by Augustin Pyramus de Candolle:
- Phytotomy, or anatomy of plants
1877, George Gulliver, “List of Plants which afford Raphides, Sphæraphides, Long Crystal Prisms, and Short Prismatic Crystals”, in Henry Lawson, editor, The Monthly Microscopical Journal:
- Having often been asked for the names of the plants in which these crystals may be most conveniently examined and distinguished, probably a short list of them, with a few explanatory remarks, would be useful to the students of this interesting and too much neglected branch of microscopic phytotomy.
1895, William Darling, The Essentials of Anatomy:
- Anatomy may be divided into two great classes, Phytotomy, or vegetable anatomy, and Zoötomy, or animal anatomy.