Englishfor English speakers
Bi
—
noun
(= bismuth)
a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals
directional
—
adjective
relating to or indicating directions in space
a directional microphone
—
adjective
relating to direction toward a (nonspatial) goal
he tried to explain the directional trends of modern science
—
adjective
(= directing)
showing the way by conducting or leading; imposing direction on
felt his mother's directing arm around him
the directional role of science on industrial progress
replication
—
noun
(= reproduction)
the act of making copies
Gutenberg's reproduction of holy texts was far more efficient
—
noun
the repetition of an experiment in order to test the validity of its conclusion
scientists will not believe an experimental result until they have seen at least one replication
—
noun
(law) a pleading made by a plaintiff in reply to the defendant's plea or answer
—
noun
(genetics) the process whereby DNA makes a copy of itself before cell division
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noun
(= replica)
copy that is not the original; something that has been copied
—
noun
(= echo)
the repetition of a sound resulting from reflection of the sound waves
she could hear echoes of her own footsteps
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noun
(= rejoinder)
a quick reply to a question or remark (especially a witty or critical one)
it brought a sharp rejoinder from the teacher