Word: knockdown
Part of speech: Noun
Syllables: knock
down
Definition: The use of a reagent such as an oligonucleotide with sequence complementary to an active gene or its mRNA transcript, to interfere with the expression of said gene.
Morphemes:
Affix: knock
Language: en
PoS: Noun
Meaning: Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it.
Affix: down
Language: en
PoS: Noun
Meaning: A grudge ( on someone).