a.1.Having ability to construct or form; employed in construction; as, to exhibit constructive power.
The constructive fingers of Watts.
- Emerson.
2.Derived from, or depending on, construction, inference, or interpretation; not directly expressed, but inferred.
3.helpful; promoting improvement; intended to help; as, constructive criticism; constructive suggestions. Contrasted with destructive.
Constructive crimes
(Law) acts having effects analogous to those of some statutory or common law crimes; as, constructive treason. Constructive crimes are no longer recognized by the courts.
Constructive notice
notice imputed by construction of law.
Constructive trust
a trust which may be assumed to exist, though no actual mention of it be made.
Adj.1.constructive - constructing or tending to construct or improve or promote development; "constructive criticism"; "a constructive attitude"; "a constructive philosophy"; "constructive permission"
destructive - causing destruction or much damage; "a policy that is destructive to the economy"; "destructive criticism"
2.constructive - emphasizing what is laudable or hopeful or to the good; "constructive criticism"

CONSTRUCTIVE. That which is interpreted.
     2. Constructive presence. The commission of crimes, is, when a party is not actually present, an eyewitness to its commission but, acting with others, watching while another commits the crime. 1 Russ. Cr. 22.
     3. Constructive larceny. One where the taking was not apparently felonious, but by construction of the prisoner's acts it is just to presume he intended at the time of taking to appropriate the property feloniously to his own use; 2 East, P. C. 685; 1 Leach, 212; as when he obtained the delivery of the goods animo furandi. 2 N. & M. 90. See 15 S. & R. 93; 4 Mass. 580; I Bay, 242.
     4. Constructive breaking into a house. In order to commit a burglary, there must be a breaking of the house; this may be actual or constructive. A constructive breaking is when the burglar gains an entry into the house by fraud, conspiracy, or threat. See Burglary, A familiar instance of constructive breaking is the case of a burglar who coming to the house under pretence of business, gains admittance, and after being admitted, commits such acts as, if there had been an actual brooking, would have amounted to a burglary Bac. Ab. Burglary, A. See 1 Moody Cr. Cas. 87, 250.
     5. Constructive notice. Such a notice, that although it be not actual, is sufficient in law; an example of this is the recording of a deed, which is notice to all the world, and so is the pendancy of a suit a general notice of an equity. 4 Bouv. Inst. n. 3874. See Lis pendens.
     6. Constructive annexation. The annexation to the inheritance by the law, of certain things which are not actually attached to it; for example, the keys of a house; and heir looms are constructively annexed. Shep. Touch. 90; Poth. Traits des Choses, Sec. 1.
     7. Constructive fraud. A contract or act, which, not originating in evil design and contrivance to perpetuate a positive fraud or injury upon other persons, yet, by its necessary tendency to deceive or mislead them, or to violate a public or private confidence, or to impair or injure public interest, is deemed equally reprehensible with positive fraud, and therefore is prohibited by law, as within the same reason and mischief as contracts and acts done malo animo. 1 Story, Eq. Sec. 258 to 440.

(mathematics)constructive - A proof that something exists is "constructive" if it provides a method for actually constructing it. Cantor's proof that the real numbers are uncountable can be thought of as a *non-constructive* proof that irrational numbers exist. (There are easy constructive proofs, too; but there are existence theorems with no known constructive proof).

Obviously, all else being equal, constructive proofs are better than non-constructive proofs. A few mathematicians actually reject *all* non-constructive arguments as invalid; this means, for instance, that the law of the excluded middle (either P or not-P must hold, whatever P is) has to go; this makes proof by contradiction invalid. See intuitionistic logic for more information on this.

Most mathematicians are perfectly happy with non-constructive proofs; however, the constructive approach is popular in theoretical computer science, both because computer scientists are less given to abstraction than mathematicians and because intuitionistic logic turns out to be the right theory for a theoretical treatment of the foundations of computer science.
advantageous, aidful, beneficial, causative, conducive, construable, constructional, contributory, creative, deduced, definitional, demiurgic, derived, descriptive, diagnostic, exegetic, formative, furthersome, generative, good for, hermeneutic, implicit, inferential, inferred, interpretable, interpretational, interpretive, inventive, originative, positive, practicable, practical, productive, profitable, ratiocinative, remedial, renderable, salutary, semeiological, serviceable, symptomatological, therapeutic, tropological, virtual
Construct form
constructed type
Constructio contra rationem introducta
construction industry
Construction legis non facit injuriam
Construction of an equation
construction paper
Construction train
construction worker
-- Constructive --
constructive breach
Constructive Cost Model
Constructive crimes
constructive eviction
constructive fraud
constructive metabolism
Constructive mileage
Constructive notice
constructive possession
constructive solid geometry
constructive trust
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