| contact | close interaction, they kept in daily contact, they claimed that they had been in contact with extraterrestrial beings |
| eye contact | contact that occurs when two people look directly at each other, a teacher should make eye contact with the students |
contact
physical contact | the act of touching physically, her fingers came in contact with the light switch |
| contact sport | a sport that necessarily involves body contact between opposing players |
air filter
air cleaner | a filter that removes dust from the air that passes through it |
| coffee filter | filter (usually of paper) that passes the coffee and retains the coffee grounds |
contact
tangency | (electronics) a junction where things (as two electrical conductors) touch or are in physical contact, they forget to solder the contacts |
| contact contact lens | a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication |
| contact print | a print made by exposing a photosensitive surface to direct contact with a photographic negative |
| electrical contact | contact that allows current to pass from one conductor to another |
| filter | device that removes something from whatever passes through it |
| filter | an electrical device that alters the frequency spectrum of signals passing through it |
| filter bed | filter consisting of a layer of sand or gravel for filtering water |
| filter tip | an air filter on the end of a cigarette, contains material that filters the smoke |
| filter-tipped cigarette | a cigarette with a filter tip |
| fuel filter | a filter in the fuel line that screens out dirt and rust particles from the fuel |
| high-pass filter | a filter that passes frequencies above a certain value and attenuates frequencies below that value |
light filter
diffusing screen | a transparent filter that reduces the light (or some wavelengths of the light) passing through it |
| low-pass filter | a filter that passes frequencies below a certain value and attenuates frequencies above that value |
| oil filter | a filter that removes impurities from the oil used to lubricate an internalombustion engine |
| water filter | a filter to remove impurities from the water supply |
wiper wiper arm
contact arm | contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet |
liaison
link
contact
inter-group communication | a channel for communication between groups, he provided a liaison with the guerrillas |
| eye contact | a meeting of the eyes between two people that expresses meaningful nonverbal communication, it was a mere glance, but the eye contact was enough to tell her that he was desperate to leave |
| contact touch | a communicative interaction, the pilot made contact with the base, he got in touch with his colleagues |
contact
impinging
striking | the physical coming together of two or more things, contact with the pier scraped paint from the hull |
contact
middleman | a person who is in a position to give you special assistance, he used his business contacts to get an introduction to the governor |
catalysis
contact action | acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction, of the topcommodity chemicals,are created directly by catalysis and another are made from raw materials that are catalytically produced |
| contact dermatitis | a delayed type of allergic reaction of the skin resulting from skin contact with a specific allergen (such as poison ivy) |
| contact | the state or condition of touching or of being in immediate proximity, litmus paper turns red on contact with an acid |
| filter paper | a porous unsized paper used for filtering |
reach
get through
get hold of
contact | be in or establish communication with, Our advertisements reach millions, He never contacted his children after he emigrated to Australia |
touch adjoin meet
contact | be in direct physical contact with, make contact, The two buildings touch, Their hands touched, The wire must not contact the metal cover, The surfaces contact at this point |
percolate
sink in
permeate
filter | pass through, Water permeates sand easily |
filter
filtrate
strain
separate out
filter out | remove by passing through a filter, filter out the impurities |
| fly contact | fly a plane by using visible landmarks or points of reference |
trickle
dribble
filter | run or flow slowly, as in drops or in an unsteady stream, water trickled onto the lawn from the broken hose, reports began to dribble in |
| filter-tipped | of a cigar or cigarette, having a tip designed to filter the smoke, filter-tipped cigarettes |