Word: deceleron
Part of speech: Noun
Syllables: de
cel
er
on
Definition: A two-part aileron that can be deflected as a unit to provide roll control, or split open to act as an air brake.
Morphemes:
Affix: de-
Language: en
PoS: Prefix
Meaning: Intensifying; make more intense, stronger, or more marked; 
Etymology Compounds: Affix: dē-
Language: la
Decoded: de-
PoS: Prefix
Meaning: de-
Affix: accelerate
Language: en
PoS: Verb
Meaning: Alternative form of accelerated; cause to move faster
Etymology Compounds: Affix: ad
Language: la
Decoded: ad
PoS: Preposition
Meaning: for, to, toward
Affix: celer
Language: la
Decoded: celer
PoS: Adjective
Meaning: fast, swift, quick, speedy, fleet
Affix: -ō
Language: la
Decoded: -o
Meaning: denominative
Affix: aileron
Language: en
PoS: Noun
Meaning: The hinged part on the trailing edge of an airplane wing, used to control longitudinal turns.
Etymology Compounds: Affix: aile
Language: fr
Decoded: aile
PoS: Noun
Meaning: side, wing, ala
Affix: -er-
Language: fr
Decoded: -er-
PoS: Interfix
Meaning: used before various noun-forming suffixes
Affix: -on
Language: fr
Decoded: -on
PoS: Suffix
Meaning: Indicating origin or occupation.