Definition of building block in English:

building block

Syllabification: build·ing block

noun

1A child’s toy brick, typically made of wood or plastic.
More example sentences
  • These are quite old fashioned toys, like wooden building blocks, wooden yachts and so on.
  • In the Mendelson hall, for example, there is a box of Lego and another of wooden building blocks.
  • It consists of seven boxes that purport to contain sets of the popular Lego brand plastic building blocks.
2A basic unit from which something is built up: sounds are the building blocks of language
More example sentences
  • When I was going to those places, sometimes I would have to take what would roughly equate to an infantry section, which is the basic building block of a military unit.
  • This was important to physicists because all the basic building blocks of matter are fermions.
  • Again, the conclusion is that there is a rather small region of parameter space in which the basic building blocks of chemical complexity can exist.

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Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope