What does "constructive" mean?

Constructive: Derived from, or depending on, construction or interpretation; not directly expressed, but inferred. 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.