
verschreiben
to prescribe
As a doctor, to order a medication or treatment for a patient in writing.
Der Arzt hat mir ein starkes Schmerzmittel verschrieben.
The doctor prescribed me a strong painkiller.
to prescribe / to make a writing mistake
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to prescribe
As a doctor, to order a medication or treatment for a patient in writing.
Der Arzt hat mir ein starkes Schmerzmittel verschrieben.
The doctor prescribed me a strong painkiller.

to make a writing mistake
To make a mistake while writing by writing the wrong word or the wrong letter.
Entschuldigung, ich habe mich bei der Hausnummer verschrieben, es ist die 15, nicht die 51.
Sorry, I made a mistake with the house number; it's 15, not 51.

to devote oneself
To devote and commit oneself completely to a cause, an idea, or a person.
Er hat sich voll und ganz der Forschung verschrieben.
He has devoted himself completely to research.

to use up writing
To use up writing materials such as ink, paper, or pens through intensive writing.
Für seine Memoiren hat der Autor unzählige Kugelschreiber verschrieben.
For his memoirs, the author used up countless ballpoint pens writing.
'Verschreiben' is an inseparable verb derived from the verb 'schreiben' (to write). The prefix 'ver-' remains firmly attached to the verb in all sentence forms and is never separated.
Ich glaube, der Arzt hat mir das falsche Medikament verschrieben.
I think the doctor prescribed me the wrong medication.
The meaning changes completely depending on whether the verb is used reflexively (with 'sich') or not. Without 'sich', it usually means 'to issue a prescription', while 'sich verschreiben' means 'to make a writing mistake' or 'to devote oneself to something'.
Der Arzt verschreibt ein Antibiotikum.
The doctor prescribes an antibiotic.
When a doctor prescribes something, a fixed structure is used: the person who receives the prescription is in the dative, and the medication or treatment is in the accusative.
Die Ärztin verschrieb dem Patienten Bettruhe.
The doctor prescribed the patient bed rest.
In the meaning 'to make a writing mistake', the verb is always reflexive. You say 'sich verschreiben'. It is often supplemented with the preposition 'bei' to indicate where the mistake occurred.
Oh, ich habe mich beim Datum verschrieben. Wir treffen uns morgen, nicht heute.
Oh, I made a mistake with the date. We're meeting tomorrow, not today.
When you devote yourself to something, that thing is in the dative. The structure is: 'sich einer Sache verschreiben' (to devote oneself to something).
Dieser Wissenschaftler hat sich der Erforschung des Klimawandels verschrieben.
This scientist has devoted himself to researching climate change.
to prescribe / write out
A doctor can vorschreiben (prescribe or mandate) a particular behavior or verschreiben (prescribe) a medication. Vorschreiben means laying down a binding rule or instruction. In a medical context, verschreiben refers to the written ordering of a medication or treatment. Therefore, a medication is verschrieben, not vorgeschrieben.

Der Arzt verschreibt dem Patienten ein Medikament gegen die Schmerzen.
The doctor prescribes the patient medication for the pain.
Der Arzt schreibt dem Patienten tägliche Bewegung vor.
The doctor prescribes daily exercise for the patient.