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 (măs′ĭ-kŏt′, -kō′)

[Middle English masticot, from Middle French massicot, marcicotte, perhaps ultimately partly from Arabic martak, litharge (probably from Middle Persian murdag, dead (probably used metaphorically of the byproducts of smelting; compare Persian murdāsang, dross of lead murda, dead + sang, stone), from Old Persian marta-, from mariya-, to die; see mer- in Indo-European roots) and partly from Old Italian marzacotto, potter's glaze of lead oxide, sand, and potash (from alteration (influenced by Old Italian cotto, cooked) of Arabic masḥaqūnīyā, from Syriac mešāḥ qunyā, glaze of ashes : Syriac mešāḥ, unguent, salve from mšaḥ, to anoint; see mšḥ in Semitic roots + Greek koniā, ashes, sand; akin to Latin cinis, ashes).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) a yellow earthy secondary mineral consisting of lead oxide. Formula: PbO
[C15: via French from Italian marzacotto ointment, perhaps from Arabic shabb qubti Egyptian alum]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.massicot - the mineral form of lead monoxide; in the form of yellow powder it is used as a pigment
lead ore - ore containing lead
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
[USPRwire, Tue Aug 20 2019] Introduction A high performance fiber, PBO (or Poly-p-phenylene-2, 6-benzobisoxazole), is a heat resistant fiber.
"This will give the PBO the necessary independence to undertake the role for which it is being established," Finance Minister Grant Robertson said.
There will be cost savings in terms of security personnel, travel costs among others," the PBO says.
designated as a performance-based organization (PBO)--a structure
Deltamethrin 0.0075 g ai/m2, Permethrin 0.0625 g ai/m2, Cypermethrin 0.025 g ai/m2), and four combinations with PBO (1: 0.125, 1:0.25, 1:0.5 and 1:1) were used in the assays (Table I).
The total returns average $181 billion over 2000-2006, compared with an average interest cost of the PBO liability of $219 billion.
And the sustained attack by the Harper administration on this critical dimension of responsible government was at the heart of the controversy between the PBO and PCO in 2012.
Data indicated a significant increase of 58.6-fold in toxicity of coumaphos with the synergist PBO to varroa mites compared with coumaphos alone (Table 1).
PBO (Pinoy Box Office) offers the most extensive Filipino film library with blockbuster offerings.
Treatment discontinuation rates were 9% for PBO versus 10% for NIC.