exceptional

exception (English)

(computing) An interruption in normal processing, typically caused by an error condition, that can be handled by another part of the program.. (legal) An objection, on legal grounds; also, as in conveyancing, a clause by which the grantor excepts or reserves something before the right is transferred.. An objection; cavil; dissent; disapprobation; offense; cause of offense; — usually followed [...]

-al (English)

(organic chemistry) Forms the names of aldehydes. Forming nouns, especially of verbal action.. Of or pertaining to. Adjectival suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also.

exceptional (English)

An exception, or something having an exceptional value (geometry) Corresponding to something of lower dimension under a birational correspondence.. Better than the average; superior due to exception or rarity.. Forming an exception; not ordinary; uncommon; rare.