Definition of mastic in English:

mastic

noun

  • 1[mass noun] An aromatic gum or resin which exudes from the bark of a Mediterranean tree, used in making varnish and chewing gum and as a flavouring:

    ‘incense made from sandalwood, eagle-wood, mastic and cloves’
    • ‘When the stems of the bushes are wounded, even slightly, mastic exudes as a clear sticky substance.’
    • ‘Look for Greek or Turkish mastic, which usually comes from pine trees, in Middle Eastern or wholefood stores.’
    • ‘Bombay mastic comes from P. cabulica, the terebinth pistachio tree.’
    • ‘Acrylic and ketone resins are used in place of the traditional dammar, mastic, and copal resins for the manufacture of many oil painting media and picture varnishes.’
  • 2The bushy evergreen Mediterranean tree which yields mastic and has aromatic leaves and fruit, closely related to the pistachio.

    • ‘Mastic gum is a resinous exudate obtained from the stem and leaves of the mastic tree, an evergreen shrub native to the Mediterranean Basin.’
    • ‘In addition, herbs such as corydal, corydalis, mastic, myrrh, and bupleurum offer strong pain-relieving properties.’
    • ‘In the desert there will remain some stones, a whole gigantic ruin slowly split and slaked by waters and wind, mastic trees, frost.’
    1. 2.1 Used in names of trees that are similar or related to the mastic tree, e.g. American mastic.
  • 3[mass noun] A putty-like waterproof filler and sealant used in building:

    ‘run a bead of mastic along the gap’
    [as modifier] ‘a mastic sealant’
    [count noun] ‘use a mastic between the joints’
    • ‘The glass threads are then pressed into the mastic vertically one by one.’
    • ‘Special mastics are used to adhere the vinyl to the metal and these can last for several years.’
    • ‘Various mastics or non-cloth-backed tapes are preferable.’
    • ‘On 23 August, 1994, they did some cleaning and also laid some roofing mastic.’
    • ‘I would have done a load more but for the fact that I couldn't find the mastic gun holder.’
    • ‘This product is designed to be used with mastics.’
    • ‘I got the patching up done and put some mastic on some of the door casings.’
    • ‘This is verified by the presence of alkali at the surface-to-surface bond of failed systems, which is responsible for the breakdown of the bonding of glues, mastics, epoxies, paints, and mortars.’
    • ‘For a quick-fix repair, the crack can be sealed with a specialist mastic, for example Plumba Gutter by Dow Corning, which is designed to adhere to lead and brick.’
    • ‘Top tip: fill gaps between primed woodwork and walls with a mastic gun.’
    • ‘If deterioration is extensive, the mastic seal may need to be replaced.’
    • ‘It dates back to Cork in 1913 when the company made and laid mastic asphalt.’
    • ‘Stone mastic asphalt has only been used in Ireland in the last two years and only on one per cent of the roads network.’
    • ‘You can also use silicone or mastic sealants to draught-proof doors and window frames and stop water leaking into wood, causing rot.’
    • ‘If you are using mastic cement as an adhesive, fill the joints with thin-set adhesive to avoid water damage.’
    • ‘If the gap in the duct connection is larger than 1/4 inch use fiberglass reinforcing membrane in addition to mastic.’
    • ‘Once again it has been paralysed after vandals blocked coin slots with brown mastic.’
    • ‘Use mirror mastic, a strong waterproof adhesive that's available at large hardware stores and glass shops, to mount the mirror to the plywood.’
    • ‘He noticed that in various places round the property, a mastic compound had been used to secure the edges of tiles to adjacent tiles.’
    • ‘These indicate air leaks, and they should be sealed with a duct mastic.’

Origin

Late Middle English: via Old French and Latin from Greek mastikhē (perhaps from mastikhan masticate).

Pronunciation

mastic

/ˈmastɪk/