(redirected from Hegar's dilator)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to Hegar's dilator: Hegar sign


 (dī-lā′tər, dī′lā′-, dĭ-lā′-)
1. A muscle that dilates a body part, such as a blood vessel or the pupil of the eye.
2. An instrument that dilates a body part, such as a cavity, canal, or orifice.


(daɪˈleɪtə; dɪ-) or




(ˌdaɪləˈteɪtə; ˌdɪ-)
1. (Surgery) something that dilates an object, esp a surgical instrument for dilating a bodily cavity
2. (Physiology) a muscle that expands an orifice or dilates an organ


or di•lat•er

(daɪˈleɪ tər, dɪ-, ˈdaɪ leɪ-)

1. any muscle that dilates a part of the body.
2. a surgical instrument for performing a dilatation.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dilator - a muscle or nerve that dilates or widens a body part
body part - any part of an organism such as an organ or extremity
2.dilator - a drug that causes dilation
drug - a substance that is used as a medicine or narcotic
vasodilative, vasodilator - a drug that causes dilation of blood vessels
3.dilator - a surgical instrument that is used to dilate or distend an opening or an organ
surgical instrument - a medical instrument used in surgery


n. dilatador.
1. músculo que dilata un órgano al contraerse;
2. instrumento quirúrgico para expandir o dilatar un orificio o paredes;
Hegar's ______ de Hegar, instrumento usado para dilatar el canal uterino.


n dilatador m
References in periodicals archive ?
When Hegar's dilator was introduced the internal os was found to be closed.
A Hegar's dilator was passed through uterus to check the communication of uterine cavity with vaginal canal but it was found that lower part of uterus was blind with no cervix.
The adequacy of the RVOT was assessed, Hegar's dilators were introduced through RVOT to assess adequacy based on normalized sizes according to for body surface area and also the size of the pulmonary valve and the main pulmonary artery was achieved with Hegar dilator according to the Kirklin table of the Z+2 to the Normal body Surface Area (BSA).