• Webster's Revised Unabridged Dictionary
    • Mammillated (Zoöl) Bounded like a nipple; -- said of the apex of some shells.
    • Mammillated Having small nipples, or small protuberances like nipples or mammæ.
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Century Dictionary and Cyclopedia
    • mammillated Having nipple-like processes or protuberances; furnished with anything resembling a nipple or nipples: as, a mammillated mineral (as flint containing chalcedony); a mammillated shell (one whose apex is rounded like a teat).
    • mammillated Nipple-shaped; formed like a teat.
    • ***
Chambers's Twentieth Century Dictionary
    • Mammillated having small nipples, or little globes like nipples: nipple-shaped
    • ***


Webster's Revised Unabridged Dictionary
See Mammilla
Chambers's Twentieth Century Dictionary


In literature:

I believe no rocks escape scoring, polishing and mammillation in the Alps, though some lose it easily when exposed.
"More Letters of Charles Darwin Volume II" by Charles Darwin
Mammilate: with nipple-like protuberances or processes.
"Explanation of Terms Used in Entomology" by John. B. Smith
Occurs generally in mammillated concretions.
"The Elements of Blowpipe Analysis" by Frederick Hutton Getman
P. convex, mammillate, squamulose; g. emarginato-adnexed; s. hollow, equal, flexuous; sp.
"European Fungus Flora: Agaricaceae" by George Massee
Spermaries are produced more readily than ovaries; they are mammillate in form and number from 4 to 24.
"Freshwater Sponges, Hydroids & Polyzoa" by Nelson Annandale