porous

po·rous

adjective \ˈpȯr-əs\

: having small holes that allow air or liquid to pass through

: easy to pass or get through

Full Definition of POROUS

1

a :  possessing or full of pores

b :  containing vessels <hardwood is porous>

2

a :  permeable to fluids

b :  permeable to outside influences

3

:  capable of being penetrated <porous national boundaries>

— po·rous·ly adverb

— po·rous·ness noun

Examples of POROUS

1. The country has a porous border.
2. <a cleaner that should not be used on porous surfaces>

First Known Use of POROUS

14th century

Related to POROUS

Synonyms

passable, permeable, pervious, penetrable

Antonyms

impassable (also impassible), impenetrable, impermeable, impervious, nonporous

Related Words

absorbent; breathable

Near Antonyms

airtight, watertight; close, compact, dense, thick

Rhymes with POROUS

chorus, Doris, Horace, Horus, loris, Maurice, morris, orris, sorus, torus

po·rous

adjective \ˈpōr-əs, ˈpȯr-\   (Medical Dictionary)

Medical Definition of POROUS

1

: possessing or full of pores <porous bones>

2

: permeable to fluids