Similar words: tactlessness, tactless, tactlessly, contactless, object lesson, product line, product life cycle, artlessness. Meaning: ['dʌk(t)lɪs] 
adj. not having a duct.
adj. not having a duct. 
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1. Some ductless glands produce several different hormones.
2. Endocrine system: Group of ductless glands that secrete hormones necessary for normal growth and development, reproduction, and homeostasis.
3. Used in ducted and ductless range hoods and over the counter microwave ovens.
4. Endocrinology is defined as the study of the ductless or endocrine glands and their internal secretions.
5. As an important component of the ductless inductive ventilation system, the jet inducted fan is used more and more widely in ventilation system of underground garage.
6. This paper describes newly technology trend of component mounter and green technology of ductless reflow furnance.
7. How is the temperature distribution in large refrigerated warehouses with ductless air distribution?
8. Eg. 6 Endocrinology is defined as the study of the ductless or endocrine glands and their internal secretions.
9. Other endocrine glands include the pituitary, the thyroid and parathyroid, the adrenals and the ovaries and testes. Some ductless glands produce several different hormones.
More similar words: tactlessness, tactless, tactlessly, contactless, object lesson, product line, product life cycle, artlessness, restlessness, listlessness, effortlessness, limitlessness, weightlessness, relentlessness, thoughtlessness, seductress, witless, gutless, artless, restless, listless, bootless, dustless, rootless, meatless, spotless, productiveness, fruitless, dauntless, guiltless.