What's the difference between intrude and penetrate?

Intrude


Definition:

  • (v. i.) To thrust one's self in; to come or go in without invitation, permission, or welcome; to encroach; to trespass; as, to intrude on families at unseasonable hours; to intrude on the lands of another.
  • (v. t.) To thrust or force (something) in or upon; especially, to force (one's self) in without leave or welcome; as, to intrude one's presence into a conference; to intrude one's opinions upon another.
  • (v. t.) To enter by force; to invade.
  • (v. t.) The cause to enter or force a way, as into the crevices of rocks.

Example Sentences:

  • (1) Each test was recorded using a video TV monitor system, and at a later time several behavioral elements shown by both resident and intruder mice were measured.
  • (2) The monkey brain (Macaca fascicularis) also accumulates P and D. Adrenal suppression with dexamethasone for 4 days does not decrease the concentrations of brain P and 3rd ventricle CSFP and D. The concentrations of brain D are decreased to a much smaller extent than plasma D. D inhibits the aggressive behavior of castrated male mice exposed to lactating female intruders.
  • (3) Aggressive behavior was evoked by introducing a group-housed male mouse (intruder) into the home cage of the isolated or nonisolated mouse (resident).d-Amphetamine, methamphetamine, methylphenidate, cocaine, and L-dopa decreased attack and threat behavior by resident mice, the isolates requiring 2--4 times higher drug doses for the antiaggressive effects than the nonisolates, d-Amphetamine, methamphetamine, and methylphenidate caused intruder mice to be more frequently attacked by their non-treated resident opponents, to escape more often, to assume the defensive upright posture less, and to move about more often.
  • (4) The test was briefly interrupted by a woman (intruder).
  • (5) As a first step in these processes, an enhanced chemotactic activity can attract neutrophils to the bronchial lumen, where they help by cleaning the lungs from possible dangerous intruders, but can also cause damage to the normal lung architecture.
  • (6) If we drive politicians down the road to ever greater disclosure, how can we resist the demands of the home secretary, Theresa May, that her security mafia intrude ever further into our private lives?
  • (7) This immune reaction is an attempt to change the histotypic pattern of the intruder.
  • (8) Sitting in the Khartoum restaurant as the fierce late-afternoon sun intrudes through the windows, Lubna dismisses the notion that western praise might be a drawback in a country like Sudan.
  • (9) Still, the legacy of genocide continued to intrude.
  • (10) The US secret service allowed an armed man with an arrest record to enter an elevator with president Barack Obama, it was disclosed on Tuesday, hours after officials admitted they missed three chances to deter an intruder who broke into the White House earlier this month.
  • (11) "The longer this intrusion persisted it became clear to the authorities that the intruders had no intention to leave Sabah," Najib said.
  • (12) The cytotrophoblast was restricted to the blastocoel, whilst syncytiotrophoblast intruded to the endometrial basal lamina.
  • (13) Having narrowly avoided taking the state into the realm of a free press we should not be intruding on the freedom of worship that is the proper preserve of the church not the courts."
  • (14) Dehydroepiandrosterone (DHA) and 3 beta-methyl-androst-5-en-17-one (CH3-DHA) suppress attacks by castrated male mice towards lactating female intruders (Haug et al.
  • (15) In general, the Private Office will need to know where the Minister will be (for security purposes) and how to maintain contact; apart from this, the Private Office should not intrude on the Minister's personal free time.
  • (16) The state tried to prove that Pistorius was aware that it was Steenkamp behind the toilet door but the judge accepted the defence's claims that he thought it was an intruder.
  • (17) There is a difference between grabbing a bedside lamp and whacking an intruder because you are worried about the children and hitting someone and then stabbing them 17 times," one source said.
  • (18) The dorsal raphé-lesioned rats showed significantly fewer interactions of all kinds, compared with control rats when an intruder was placed in their home cages.
  • (19) These intruding striated muscle fibres also received direct autonomic (mostly adrenergic) innervation.
  • (20) "He just looked at me and he said, 'I thought it was an intruder'."

Penetrate


Definition:

  • (v. t.) To enter into; to make way into the interior of; to effect an entrance into; to pierce; as, light penetrates darkness.
  • (v. t.) To affect profoundly through the senses or feelings; to touch with feeling; to make sensible; to move deeply; as, to penetrate one's heart with pity.
  • (v. t.) To pierce into by the mind; to arrive at the inner contents or meaning of, as of a mysterious or difficult subject; to comprehend; to understand.
  • (v. i.) To pass; to make way; to pierce. Also used figuratively.

Example Sentences:

  • (1) The penetration of (22)Na was not prevented by the presence of metabolic inhibitors or by 500 mm NaCl in the suspending medium.
  • (2) Content of cyclic nucleoside monophosphates was decreased in all the eye tissues in experimental toxico-allergic uveitis as well as penetration of cAMP into the fluid of anterior chamber of the eye.
  • (3) After four years of existence, many evaluations were able to show the qualities of this system regarding root canal penetration, cleaning and shaping.
  • (4) testosterone, fentanyl, nicotine) may ultimately be administered in this way, important questions pertaining to pharmacology (tolerance), toxicity (irritation, sensitisation) and dose sufficiency (penetration enhancement) remain.
  • (5) The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration.
  • (6) Thus, although ferric-enterochelin cannot penetrate the cell surface from outside, the complex that is formed within the envelope is transported normally into the cell.
  • (7) Major limitations of the conventional sperm penetration assay are the inability to assess several aspects of sperm function (zona binding and penetration) and the absence of human ovulatory products known to influence fertilization.
  • (8) The cercaria, microcercous in type, is liberated and actively penetrates a second terrestrial pulmonate where development to the free metacercarial stage takes place in the pericardial cavity.
  • (9) The incomplete penetrance of the neoplastic phenotype and the monoclonality of lymphoid tumors suggest that tumor formation in v-fps mice requires genetic or epigenetic events in addition to expression of the P130gag-fps protein-tyrosine kinase.
  • (10) All of these factors make morbidity and mortality associated with penetrating injuries low.
  • (11) The treatment led to decreased spinnbarkeit, arborization and sperum penetration in the cervical mucus.
  • (12) The penetration coefficient, determined by the surface tension, contact angle and viscosity, is a measure of the ability of a liquid to penetrate into a capillary space, such as interproximal regions, gingival pockets and pores.
  • (13) The rational surgical methods of treatment in 85 patients with suppurative hepatic echinococcosis penetrating into the abdomen cavity are presented.
  • (14) This apparent lack of centrosomal staining was not due to problems associated with penetration of the antibody probes, since staining adjacent to and within the centriolar cylinder was observed when phosphoprotein antigens recognized by the MPM-2 antibody were localized.
  • (15) Both types of oral cleft, cleft palate (CP) and cleft lip with or without CP (CLP), segregate in these families together with lower lip pits or fistulae in an autosomal dominant mode with high penetrance estimated to be K = .89 and .99 by different methods.
  • (16) Cefuzoname seems to be among the middle ranks of beta-lactam agents as far as penetration rate is concerned; however, when its potent antibacterial activity and broad spectrum are taken into account, the concentrations in CSF in patients with meningitis seem worth examining.
  • (17) The time of sperm penetration in the mouse eggs, however, was delayed for one-half to one hour when ejaculated sperm were used.
  • (18) Enzymatic lability does not, however, play as important a role as lipophilicity in the corneal and conjunctival penetration of cycloalkyl and aryl ester prodrugs.
  • (19) No infection threads were found to penetrate either root hairs or the nodule cells.
  • (20) Kinetic studies showed that significant inhibition of virus production occurred when the inhibitor was added to infected cultures up to 5 h after virus penetration.